It's about convivence. It's not been about big ticket items for me on such days lately, but more to stock up on essentials, prime day is a day I can assure they are usually all on 'offer' at the same time so it makes it easy to do a large order of everything and stock up.

Sure, might not be the absolute best price of the year, but it's a decent price for everything all at the same time, with the odd bigger ticket stuff if a real deal exists.

This year I bought a lot of household items, toiletries and even a few food cupboard items, all of which according to price tracker plugins are about the lowest they get to, even if they go that price sometimes throughout the year, it's a great time to do one big shop and not have to deal with the pain of receiving so many deliveries.

I don't see it as an issue, what amazon does is what everyone else does on their sales, you just need to do your research and stay aware, like with anything.