yeah they are still cheap. you can still get 650w for $75....and they last fucking years.
I think the 1000w I have in my pc is now 8+ years old. and a handful of other 500w that are 5+ years old.
PSUs just don't fail as often IMO. Especially if you spend a couple extra bucks and get a certified one.
Yeah I have a 650 and if I want to run a 3080 and OC it with a monster CPU, I cant. The 3080 itself stock is asking for over 300w. I need a 750 or better and they are like $300 now on amazon for a gold or better modular PSU. If I get one of those, I can just swap out the unit and not have to rewire my rig.