I called these guys last year (Via ebay, user id ears-motorsport) as they had the tyres I wanted on ebay, I asked if its cheaper to buy direct and they said NO!.
I asked why and the guy said its easier for us on ebay and then tried to tell me they dont pay Ebay fees and no discounts were given to buyers buying direct!, I then explained to him that they did pay ebay fees and that they only paid 10% less fees than me!, (easy to check on various websites what volume they are selling and work out what fees they would pay!), I am also an ebay top rated powerseller like them so knoew exactly what they paid!
I then asked if i came to collect and buy direct and paid cash (Rather than paypal/credit card etc would it be any cheaper?), NO again, only no shipping would be paid.
So basically they sell on their website at almost the same price as you buy them for on ebay (The tyres your after are in their ebay shop for £107.99 plus £5 post, thats a massive 50p per pair shipped more expensive than buying direct from them, even tho they pay 8.4% in ebay fees, then you can add Paypal (or credit card) fees of 2.9% to 3.6% (Average 3.25%) so they pay 11.65% in fees and they dont discount if you collect and pay them cash
Sounds a bit short-sighted to me, if I was in the market for Tyres I would buy them off ebay and spend the extra £1, as you get both paypal and buyer protection as well as your credit card companies protection if anything goes wrong, plus if they are mad enough to prefer selling on ebay to selling via website or direct they must prefer to pay the fees
Off soapbox, rant over!!
And yes I did buy 4 tyres from them VIA Ebay and they arrived within 48 hours and were absolutely fine, they also paid £29.87 in ebay fees on my purchase, all because the man he say no discount for collection