Yep E-bay sucks ass!, I just sold 2 processors and a 4870 on there, and after paypal fees and then e-bays 10% final valuation and then the listing fee's and then P&P I lost a total of about £50, so the products went for what I was happy with and was there market value. The buyers were happy cos they got a bargain, all I got was out of pocket!!
Needless to say I won't be doing that again anytime soon. ***$ E-Bay..
Oh and to answer the question, No OCUK should not get an E-bay shop, being who they are and the service level they provide makes them stand out from the crowd.