I can't think of anything I own of any significant value that I didn't get at a good price for what it is. Car, guitar. Computer, TV. There's always a wise economic choice in the market, the way I see it, or there will be in 6 months-2 yrs.
The few items I didn't get a great deal on, I wish I hadn't bought. New pixel. 2 yr old iphone.
People are crazy. I bought all the clothes my kids needed until age 10 at a local thrift store, shoes included, all for under $300.