EP409: Holiday ecommerce is still headed for record volume. The October Amazon FBA inventory mistake that will cost brands.
7 Oct 2026 · 5 min
Neil Twa warns Amazon FBA sellers that waiting until November to adjust inventory costs money. His portfolio moved $1.55M in August across 42,156 units, with one home-and-kitchen brand jumping from 40 to 122 units monthly. He lays out three steps: audit days-of-supply for every SKU, reorder based on September trends, and set alerts when stock drops below 14 days.
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This is the High Voltage Business Builders Podcast. Daily intelligence for operators building brands that last on Amazon, TikTok Shop, Shopify, Walmart, and every channel where demand gets captured. No theory, no gurus, just what's working right now from operators who are in the trenches every single day. Strategy, tactics, real numbers, real mistakes, transparency, everything built with the end in mind, the exit. I'm Neil Twa. Let's get into it. Most operators wait until November to fix their inventory math. I'll close with the Voltage 3— today's challenge: the units per day number that says reorder now, the SKU already heading into a markdown, and the cash you keep by waiting on the next inbound. But before I unlock today's Voltage 3 insights, let's look at why inventory timing is the real margin killer this October. I was reviewing our recent portfolio data, and the numbers jumped out. In August, our overseen sales hit $1,552,793.82 across 42,156 units, with adds at $291,735.65. That's real money moving through the system. But here is the trap. September partial sales are already at $1,055,869.39. Velocity is climbing. In one of our home and kitchen brands, units jumped from 40 in August to 122 in September. That's not a blip. That's the holiday curve starting. If you do not reorder for that curve now, you miss it. I run 30 brands. I watch inventory daily. The mistake I see most often is operators guessing based on gut feel instead of documented restock systems. That's how you trap cash in inbound shipments instead of having fulfillable stock on the shelf. You end up paying for storage you do not need, or worse, missing the sale entirely. This is not about being optimistic. It's about being precise. Your margins depend on it. Let me show you what this looks like in the wild. I have a brand in home and kitchen that we own. In August, it moved 40 units. Small. Manageable. But September month-to-date, that same category is doing 122 units. That's not a linear increase. That's exponential demand hitting early. If an operator waited until October 15th to place that reorder, they would be stuck. The lead time alone would push delivery into December. Too late. I've seen operators make this exact mistake across our 30-brand portfolio. They zero in on one hero SKU, ignore the secondary velocity curve, And stock out during peak Q4. They lose significant sales. Not because the product was bad. Because their inventory system was reactive, not predictive. This is exactly what we break down in The Voltage 3. The fix is simple. You need a system that flags DOS misses 30 days out. That's the difference between a brand that survives the season and one that dies on it. You cannot buy velocity later. You have to buy stock now. If you want the CEO operator blueprint behind the 316,284 units we moved this year, join me live on October 6th at 11 AM Eastern. I'll show the 5 steps we use to sell more than $100 million on Amazon. Free seat at voltage dm.com/ai-workshop. Here is the Voltage 3. 3 moves you can run today. Number 1: Audit your current days of supply for every active SKU. Don't guess. Pull the last 90 days of sales velocity. Calculate DOS based on that trend, not last year's numbers. Check: You have a written DOS number for each SKU, updated within the last 7 days. Place your October reorders based on peak holiday velocity, not current sales. Use the September month-to-date trend as your baseline. If units jumped from 40 to 122, plan for 122+ buffer. Check: Your reorder quantity reflects projected peak demand, not current run rate. Number 3: Set a Restock Radar alert for any SKU dropping below 14 days of supply. Don't rely on manual checks— automate the warning. Check: You receive a notification when any SKU falls below the threshold, so you act before stockouts hit. Complete all 3 before the next daily episode. That's your challenge! If that inventory math just made you sweat, you are not alone. But you do not have to fix it alone. The Voltage 3 is where we keep the numbers tight and the strategy clean. We have been doing this for 13 years. We do not guess. We operate. Go to voltage dm dot com slash blueprint. Join the community. Build the brand that survives peak season without losing your mind. We will see you back here tomorrow. Until then, stay high voltage!
More from Neil


EP410: Your Amazon FBA units are reserved and pending transshipment while Q4 demand hits. How operators free the cash.


EP408: Stop guessing which SKUs deserve Q4 cash. The portfolio scorecard cut that protects margin on a $1,055,869.39 September partial book.


EP407: FTC alleges Amazon ad auction surcharges bilked brands. What Amazon sellers should audit in Sponsored Products after $291,735.65 in August ads.


EP405: Amazon put eBay, Shopify, TikTok, and Walmart orders inside Seller Central. What that costs single-channel Amazon FBA brands on a $1,552,793.82 August book.


EP404: Amazon seller search is killing new ASIN launches while old ones keep rank. What Amazon FBA operators fix this week.


EP403: Stop letting Amazon FBA inventory sit in pending-order purgatory. It is bleeding Q4 cash after 42,156 August units across the overseen book.


EP402: Amazon FBA peak ship deadlines are live. What late inbound costs sellers before the Oct 15 fee clock.



