I searched for "cayenne" and accidentally bought the hot pepper product that came up which was not cayenne.

After going mildly buckwild on amazon after 3 years of not ordering a single thing (after a move to the country) I let the free month of prime I was using expire. This, and the counterfeit product I got (and had to spend 45 minutes on the internet and phone to get refunded) was decisive. I'll try again in 5 years.

> and had to spend 45 minutes on the internet and phone to get refunded

anecdata and all, but i've had the exact opposite experience - I've never spent more than a couple of minutes getting a refund, and it's always been less time and effort than returning something to a B&M store.