Up for sale is a good working power window switch set.  Made in france.  fits at least the 505 & CX (I have a CX, and these work with it!) 

You might not find a cheaper good used set anywhere!  unlike many modern cars with "master switches" which you can't shange piecemeal, These can work in all positions, is if you have 2 dead ones now you can replace just those with with my set here, you will have 2 more for later.