What is an item below 100 bucks that everyone should own?

And reasonably good underwear too.

The brand I buy (don't want to say and be branded a shill) is like $20/pair, which is pricey for sure, but I've been wearing this brand for like a decade now and have only gone through one set in all that time, not to mention that they're comfortable AF.

If you buy the cheap hanes underwear (or similar) you'll be spending more in the long run than I am on my expensive underwear - though this is the case with a lot of things