I don't know if I've ever seen a thread with this kind of response on these forums. I'm sure they exist, but I don't visit as often as a should. I was looking at the Rock Auto website just at Toyota stuff in brake calipers.
It's all weird reman and off brand stuff. It looks like the harbor freight of auto parts. While I'm sure you can get some cheap stuff that works, you ultimately have to take a close look at it to make sure it's going to work properly and not catch fire. I don't agree with the way everyone jumped on you like that (though it was pretty funny), but I also don't agree that it's totally the vendor's fault. From the vibe I get from their site and parts listing, I'm sure quality control, customer service, and thorough research are non-existent with them.
At the same time, where are you going to get a brake caliper for 30 bucks other than a wrecking yard? You gotta check that stuff carefully while assembling to make sure it works. Hell. You could buy a dealership part and STILL have the same issues.