This invoice mistake can get your account suspended. Most new sellers don't even know the difference.
You find a great product on a discount site. Good price, solid ROI. You buy 20 units, ship them in, start selling. Then you get an IP complaint or inauthentic claim. Amazon asks for an invoice. You send the one from your purchase. Rejected. Account at risk. Here's why: that "retailer" was actually a marketplace. The product page said "sold by [third-party seller]" in the fine print. That makes it a marketplace purchase, not a retailer purchase. Amazon does NOT accept marketplace invoices for appeals. They want proof you bought from a legitimate retailer or distributor. "Sold and shipped by" the actual company. Before you buy from any online retailer, check who's actually fulfilling the order. If it says "sold by" anyone other than the website itself, that's a marketplace. Your invoice from that purchase is worthless if Amazon ever asks for it. Sites like Frugal are notorious for this. Great prices. Marketplace invoices. Do you check who the actual seller is before buying from discount sites?