Pot. Kettle. Black. There ebay!
I can't see Ebay rushing to allow Google Checkout, but still enforces the requirement to use paypal. Seems they too like to avoid competition too. Paypal ... no thanks. Fees on top of fees on top of fees! No wonder I hardly use the online car-boot site any more!
Plus if I were to buy luxury items off the intarwebs, then I would be wanting to buy direct from a reputable dealer where I can go and bash on the door if there's a problem!