I'm the same as JSR, much more convenient to just use paypal
Some of the suppliers are stuck in the dark ages, they don't even take online payments, they need to call you up for card details
And it's not like they would lose out by accepting paypal, they can get a merchant account which drastically reduces the paypal charges, and in turn can pass the surcharge on to the customer, like BMS do
OK, they might get subjected to having a pending balance (not sure if that is exclusive to ebay sellers though

), but as long as they play fair, it shouldn't be a problem either.
As much as I dislike having to accept paypal on ebay as a seller, I love using it on other sites, as a buyer