That's a good question. I'm on eBid, too. If we could use Auctiva for eBid and eBay, that would be brill. eBid has similar features as eBay but the layout of the site is different. eBid has buddy points and you can leave negative feedback for sellers and buyers. The final Value Fees seem to be very good. For selling 6 items it was £0.12 If you pay to become a seller or seller+ you can open 5 shops, don't pay any listing fees and for 24 hours you have the chance to become a seller+ for £47.50 instead of 74.99. A live time no listing fees and all the other seller+ features free. That's darn brill.
Paid plans start at £1.99 for 7 days. 6.99 for a month and so on.
You have to get a paid plan to use buy now. The bidding system is for every one.