ebay and PayPal are one and the same. No kidding.The thing that puts buyers off Bidpay is that they have to pay all the fees and for a UK seller the exchange rate is dire.
For a long time I stopped using Paypal because of their lack of support for sellers who get scammed. I only accepted cheques and Bidpay and it had no ill effect that I could guage.
The only downside is that Paypal and eBay are so closely linked that it makes it tricky to push buyers to use other payment methods as you can't combine it with eBay checkout.