No worries bullyboy.
Ross, who runs it is a great guy and I think gave a fair price. My S2000 had been keyed on three panels a week before and had bad scratches on all four wheels. The price was definitely better than I would have got at a dealer but not as good as I may have got privately. However the time saved and the fact the car was not perfect convinced me otherwise.
Pricewise the GTI was good as well. I think the key is to do your own research into what is available and how much (GTI prices don't seem to reflect what Parkers says at all due to the rarity of them) they are and then use that as a guide with the ones suggested to you. Ross won't buy anything without your say so and does all the checks, pick up, valeting and delivery.
I paid by bank transfer but I guess you could use bankers draft as well.
Not sure what you mean by image rights? If you mean for using my photo on his site, it was voluntary but I was happy to endorse it.
It really does cut out the hassle factor which when buying a car that is fairly hard to find could be significant. I would not hesitate to use them again. Anyhow, hope that helps, let me know if you have more questions.