Calculating SFP Cost 1080p

If you're thinking about Seller Fulfilled Prime, there's probably one question sitting in the back of your mind. How expensive is this actually going to be? You have to pay to ship Prime orders yourself. You may need inventory in multiple warehouses. You have storage, pick and pack, packaging, and freight to distribute inventory across the country. So is Seller Fulfilled Prime actually profitable? The answer is, it depends on the SKU. But instead of giving you that useless answer and stopping there, I'm going to show you exactly how to calculate it. We'll take 3 products, calculate what each one costs to fulfill through Seller Fulfilled Prime, compare that against FBA, and then decide whether the difference actually makes business sense. At a high level, the formula is simple. Seller-Fulfilled Prime cost per order equals parcel shipping plus pick and pack plus packaging plus inventory distribution plus storage. We don't need to explain all of that in the abstract. Let's take one real product and walk through the calculation from beginning to end. Our first example is a case of adult diapers. It sells for about $42.50, measures roughly 16 by 12 by 11 inches, weighs 8.4 pounds, and sells about 1,000 units per month. First, let's establish our FBA baseline. For this SKU, Amazon charges $16.31 to fulfill 1 unit. We're also assuming minimal shipment splits, which gives us a $3.12 inbound placement fee. Then we need to account for storage, because you can't compare FBA against Seller Fulfilled Prime by pretending Amazon only stores the item that eventually sells. You need buffer inventory in FBA too. For this example, we're assuming the seller carries about 1.5 months of inventory on average. At $0.68 per unit per month, that adds roughly $1.02 of storage per order. So our FBA total is $16.31 for fulfillment, plus $3.12 for inbound placement, plus $1.02 for storage, for a total of $20.45 per order. One important note, that $20.45 does not include the cost of transporting inventory from the merchant's warehouse into Amazon. We don't know which Amazon facility the inventory would actually be assigned to, so I'd rather leave that cost out than make one up. That means this comparison is actually slightly favorable Now let's calculate Seller Fulfilled Prime. Assume our warehouse charges $3.99 for pick and pack. The product needs a shipping box, so add another $0.50 for packaging. Then we get to the biggest number I want you to check first: your parcel shipping cost. For this item, assuming inventory is distributed close enough to the customer, our modeled UPS or FedEx ground cost is about $9.36 per order. And I want you to stop here for a second because this gives you a very useful shortcut. Amazon charges $16.31 to pick, pack, and ship this item through FBA. Our parcel shipping alone is $9.36. That gives us almost $7 of headroom to pay for the rest of the seller-fulfilled crime operation. That's promising, but it does not mean we're saving $7. Because we still haven't paid for warehouse handling, packaging, distributing the inventory, or storing it. Now imagine the numbers were reversed. Suppose Amazon charged $16 for FBA fulfillment, but your UPS or FedEx ground shipment alone cost $24. You're already $8 behind FBA before anyone picks the product, buys the packaging, distributes the inventory, or stores anything. If your only reason for considering Seller Fulfilled Prime is saving money, you can probably stop the analysis right there. For our adult diaper SKU though, the parcel economics are good enough that it's worth continuing. The next question is, how much does it cost to get the inventory close enough to customers to actually achieve that $9.36 ground rate? This product ships on a 40 by 48 by 72-inch pallet. Based on the product dimensions and allowing a little space for unavoidable gaps, one pallet holds about 62 units. For this example, we'll distribute inventory into 5 locations: Utah, Dallas, Indiana, California, and New Jersey. The freight rates are approximately $121 per pallet to Utah, $166 to Dallas, $108 to Indiana, 113 to California, and 343 to New Jersey. One pallet to each location costs about $852 total, and that distributes 310 units. So the freight cost to position the inventory is about $852 divided by 310 units, or $2.75 per unit. Now we've solved distribution. But there's another cost people often forget. Once inventory is distributed, you have to keep enough inventory in every location to avoid constantly stocking out. This SKU sells 1,000 units a month. To keep the example simple, let's divide that demand evenly across 5 warehouses, about 200 units per warehouse per month. We want roughly 1 month of safety stock, so each location needs around 200 units of buffer inventory. Replenishment also happens in whole pallet quantities. At 62 units per pallet, a roughly 1-month replenishment shipment rounds up to 4 pallets, or 248 units. But the average replenishment inventory sitting in the warehouse isn't the full 248 units because you're consuming that inventory throughout the month. So A useful estimate is 200 units of safety stock plus half of 248. That gives us about 324 units stored per warehouse on average. Across 5 warehouses, that's about 1,620 units sitting in the network. Using our storage assumption of $0.84 per cubic foot per month, that works out to around $1.66 of storage cost per order. Now we can finally add everything together. $9.36 for parcel shipping, $3.99 for pick and pack, $0.50 for packaging, $2.75 for inventory distribution, and $1.66 for storage. Total Seller Fulfilled Prime cost: $18.26 per order. FBA was $20.45. So in this example, Seller Fulfilled Prime is actually about $2.19 cheaper per order. At 1,000 orders per month, that's roughly $2,190 per month. And notice why Seller Fulfilled Prime won. It wasn't because distributed inventory was free. We paid money to move inventory around the country, and we carried additional stock in 5 locations. The savings happened because the parcel shipping economics were strong enough to absorb those extra network costs. That's why you have to calculate Seller Fulfilled Prime Economics SKU by SKU. Now that you understand the calculation, let's move much faster through our second product. This is a foldable cart selling for about $85 with roughly 1,000 orders per month. Its total FBA cost is about $20.15 per order, but here's the warning sign: Amazon's FBA fulfillment fee is $15.58, While our cheapest model ground parcel shipment is already $17.66, parcel postage alone is more expensive than the entire FBA fulfillment fee. So before we've done any complicated inventory math, we already know Seller Fulfilled Prime is probably going to lose on pure fulfillment cost. When we finish the full calculation, Seller Fulfilled Prime comes to about $27.95 per order. Roughly $7.81 more than FBA. At this point, the question changes. It's no longer, can Seller Fulfilled Prime save me money on this SKU? Probably not. The question becomes, are the other benefits worth paying an extra $7.81 per order? Maybe you want more control over your inventory. Maybe FBA receiving or inventory management constraints are hurting the business. Maybe you don't want all of your inventory locked inside Amazon. Or maybe you need the same inventory available for Shopify, Walmart, and your other sales channels. You may still choose Seller Fulfilled Prime, but now you know exactly what that choice costs. Our last example is a motorbike light kit. It sells for about $1,265, but it moves much more slowly. Around 100 units per month. FBA costs about $11.11 per order. The Seller Fulfilled Prime ground parcel shipment alone is already $14.68. That's a bad starting point. And once we add inventory distribution, pick and pack, and storage, the total Seller Fulfilled Prime cost rises to about $25.67 per order. That's roughly $14.57 more than FBA, and more than double the FBA logistics cost. There are 2 problems here. First, parcel shipping is already structurally more expensive than FBA fulfillment. Second, because the product only sells around 100 units per month, splitting that inventory across several warehouses makes pallet-sized replenishment and buffer stock expensive on a per-order basis. So slow-moving products can get punished twice. Expensive parcel shipping, and inefficient distributed inventory. Now, $14.57 is only a little over 1% of this product's selling price, but that does not automatically make Seller Fulfilled Prime a good idea. We don't know the product's true margin. The merchant still has to decide whether that margin can absorb the additional cost and whether whatever problem they're trying to solve by leaving FBA is actually worth it. So now we've analyzed 3 products and we've gotten 3 very different answers. One product was cheaper on Seller Fulfilled Prime, one cost almost $8 more per order, one cost almost $15 more. And that's exactly the point. Seller Fulfilled Prime is not supposed to win every spreadsheet. The first question is, how much more or less would will seller-fulfilled Prime cost me? Once you know that number, then you can ask the real business question: What am I getting for the difference? And there's one final factor the spreadsheet doesn't completely capture. If you've built a distributed fulfillment network that can reach customers in 1 or 2 days for Amazon, that network doesn't have to serve Amazon alone. You can potentially use the same warehouses and the same inventory to fulfill Shopify orders, Walmart orders, Target orders, Etsy orders, and other channels. So maybe the premium you're paying isn't just buying you a Prime badge. Maybe it's also helping fund a faster fulfillment network for your entire business. That still doesn't justify terrible unit economics, but it absolutely belongs in the decision. So if you're considering Seller Fulfilled Prime, don't start by asking, how much does Seller Fulfilled Prime cost? Start with one SKU. Compare your FBA fulfillment fee against your realistic ground parcel cost. If that still looks promising, add pick and pack, packaging, inventory distribution, and storage. Then you'll know the actual Seller Fulfilled Prime cost for that product. And more importantly, you'll know whether the difference versus FBA is worth paying. We built a spreadsheet that does this exact calculation. If you want to run your own SKU through the same model, you can download it using the link below.