I've got a pair which I had for sale "somewhere else" a while back, along with quite a few other bits. The seat switches were the only bits that didn't sell.....
I had them up for Â£10 each inc P&P or Â£18 the pair, but you can have them for Â£10 the pair all in!
(provided I still have them. I think I have - will check in the morning)
(provided I can find them!)