I can advise you NOT to look on Ebay. For a reason very unclear to me those kickstart switches fetch enormous prices there. I sold a simple switch on Ebay last week and it went for 26 Euros (I thought it would go for 5 or something).
But ontopic: I *might* have another one lying around, but I'll have to dig deep through lots of boxes (and I'm not sure I'll find one)