rear window regulator 99 malibu

The rear window regulator failed and needs to be replaced. The mechanic said there is no aftermarket part for it, and would cost over $400. I never lower the rear window since I never have anyone riding in the back. Is there some way to make the window stay closed (I can pull it up with my hands and close it)? I tried duct tape, but that has been failing after a few weeks, particularly with extreme temperatures. Thanks

i did a search looks like regulator,motor,rollers etc. are all available
cost is no where near 400 did'nt see any part above 75.00
if you still want to just keep window up put a piece of wood under
the window glass & secure it

If you're a DIY, there must be lots of parts in a pick-your-part lot. There are up here in Alberta anyway.