That is against ebay's rules... you are not allowed to charger extra for paypal afaik...
If enough people email google and request them to make a secure auction system asap, its more likely to happen! not sure how they would do this in the near future though, as everyone's feedback would be zero so who would be trustable? It would be full of scammers to start of with... I suppose they can have a built in escrow thingy included that checks for proof of postage properly (unlike paypal!)