I occasionally did that back when I first started thrifting, but I decided that I needed to stop buying more junk that adds to my clutter. So even if I find one item I want, sometimes I won't buy it if there's too much of a line or it's just not something I absolutely have to get right then. Nowadays I'll rarely buy anything in a thrift. Most visits I leave empty-handed, and I'm fine with it. I'm always concerned that they think I'm shoplifting or something, though.