Exploring thrift stores may look exciting and glamorous, but the reality is that it requires persistence and patience. It can be a lot of fun, but for the most part consists of this:
Look at all of this worthless crap. In this picture alone, there's a broken inkjet printer, a crappy portable TV from the 80's, salad shooter, an answering machine with a missing power adapter, a VHS rewinder, a broken night light, a cassette-only boom box with a broken antenna and a damaged power cord, a "Texas Hold 'Em" TV Poker with the contents of the box strewn around the shelf, and a box of light bulbs from the 70's. This is only a minor preview of all of the shit you have to sift through to find a thrift store nightmare.
Usually though, the best items almost literally jump out at you, so in the grand scheme of things it all balances out.
[EDIT: I think I got a disease from this thrift store.]