Why on nostr, and not http?

There are many things you'll learn along the way when building an online marketplace, and starting with nostr means your product pages will be immutable. That could be a nice-to-have for tracking previous prices, but online marketing employs more psychological tactics than you can imagine, in a cutthroat landscape where second place is always just the first loser. Over-informing your customers is counter-intuitively bad for business.

With e-commerce, you're not trying to solve problems of censorship; you're trying to make a sale, and nothing else matters.