Yeah, generally they are pretty good but some aren't. I do make sure that the cheaper the part is relative to OEM parts, the more I read the reviews. If they are getting panned for not fitting right or not lasting I steer clear. The last thing I want to do is spend an hour changing the belt, idler and rollers on my dryer only to have the new dryer belt break a year later.Thanks for the info, I wasn't aware of them. I have not had any trouble with any parts I've gotten on amazon though. All parts have been pretty much identical to the original besides a couple color differences and have installed easy and performed well. I do a little homework to make sure it is the right part before I click the order button though.
And I will second you on the homework. I have often spent more time tracking down a changed part number so I can order the right part than I do making the actual repair.