> except for a malfunctioning electric window lifter on one side.

There's probably a Youtube video that'll walk you through how to replace it. I replaced the one on the driver's side door of our 2001 Honda Odyssey last year. I think it was like $120-150 (USD) for the part and 3ish hours. I know almost nothing about fixing cars (just generally how to use basic tools), but have used info from forums and (especially) youtube to fix several things like that on our cars.

[EDIT] great thing about the Youtube videos is you can get a good idea of whether it's something you can manage yourself before you tear your car apart.