Omar Zenhom explains why "I'm interested" doesn't mean someone will buy. Saying it costs nothing and can mean politeness or vague liking, while buying requires money, trust, and real commitment. Interest is cheap. Purchase intent is not.
People when they say they're interested. It's not the same of having the intent to buy. Why? Because interest is cheap. It costs the buyer nothing to say nice things. But buying, on the other hand, that costs money. It costs trust, commitment, change. Maybe even an embarrassment or fear of judgment. If things don't go right, it's risky for them. So I'm interested might just be code for I like the idea or I don't hate you, or I'm being polite, or I might buy someday or even I'm just not ready.
