I've bought a couple of regulators from ebay...and like Eye8 says the motors do not seem as powerful as the OEM ones but, their still working, they go down better than up!!...
I waxed the window and that seems to help some.
Owning a Coupe makes finding regulators more difficult, so I have two stashed. One, an Ebay reg, the other I spent the big bucks and bought a "Dorman" ($108 shipped) for the drivers side, since I use that one the most. Hopefully, I got what I paid for!
Just waiting on them to break again.
Bigbird can attest to ebay regulators, he's using two I replaced, when I owned his 94 Coupe!
Removing the door panels are ez after you do it the first time...the hardest part is removing the door handle bezel without breaking it....if that should happen to you, let me know I have extra one's I'll sell ya cheap