I’m with the other people here saying the same thing, that’s a salvaged tail light that was damaged in a wreck. That it was your tail light before it became salvage doesn’t make it ok.

And just because I know how those shops work, if at any point they said something like “we’re gonna reuse your old tail light” and you signed off on that, you might be out of luck.

Maybe your insurance company might be able to cover it under the same claim? It’s worth a phone call or email at least.

If you don’t want to DIY, definitely shop around for a better quote, but you might not find a cheaper total price. I wouldn’t burn a bridge with that shop.