Best places to buy parts

[Mark West]

I have gotten great advice from some of you over the past couple days. You helped me get my seat motor switch out of the door. I was going to clean it with connector cleaner and see if that helped, but when I took the back off the switch case, many little ball bearings and brass connectors fell out. Alas, I am a poor mechanic at best and know almost nothing about electronics.
I was given a website for buying parts, and here is the info pasted from there-
Product Brand Availability Retail Our Price
O6060-26653 Seat Switch IN STOCK $0.00 $111.03

My car is a 1990 300E

Does anyone have one of these that works that you could sell for less? Or do you know another website to buy Mercedes parts from? I am not going to call a junkyard, and the local dealers/repair shops will charge a small fortune to do this.
Mark