I wait for "try prime for 30 days" offers. I'll sign up for it, instantly cancel it to prevent recurring bills, and then order whatever it was I was thinking of over the last six months. Because once upon a time I'd be on Amazon all the time, browsing this and that, but it has become such a cesspool that I infrequently bother. If I wanted to wade through a sea of Chinese OEM crap and counterfeit products, then I might as well use Aliexpress and be done with it.
if I'm waiting for 6 months it's for something that has no pressing need, but if I'm still thinking about it in 6 months will probably bring enough joy to my life that it's worth the investment.