Depending on your product, have you considered taking payment from the purchaser's mobile phone (even if it's just an alternative payment route), that way people without Paypal can still make a payment without having to leave your site while they sign up.<p><a href="http://www.mxtelecom.com/uk/payforit#about" rel="nofollow">http://www.mxtelecom.com/uk/payforit#about</a>
<a href="http://www.mxtelecom.com/uk/tech/cta/webpfi" rel="nofollow">http://www.mxtelecom.com/uk/tech/cta/webpfi</a><p>Just a thought, I work for these guys, so I can't claim to be impartial.