Hey, are there any good thrift stores in Dallas/Plano area that tend to have stuff like instruments, electronics and/or tech equipment (ideally older stuff)?

On a side note, is anyone familiar with Liberty Tech Computer World? It’s a warehouse in an industrial area in Garland, and I was hoping it might be a place like Computer Reset since it’s (supposedly) in a big warehouse, however I’ve been unable to find any websites associated with it. I haven’t tried calling yet, but I was curious if anyone else knew anything about it.