I visited Wilsons a couple of times early evening and while I was quite happy just to look I was surprised no one approached me. I also sent an email enquiry that was never replied to so sales don't seem to be their strong point.
Have bought some parts there which was fine and had some warranty work done also OK.
I've spent some time looking round their used cars and have to agree they seem overpriced especially as many of them don't look that good, maybe all those little marks might get sorted if you buy but some of the cars don't look very pristine. A punto I saw had a very obvious front respray, not what I'd expect to see on a main dealer lot. Don't suppose they're really any different from most large dealers, just have to keep your eyes open there, one of the Pandas I saw I'm sure had suffered a rear end shunt so check carefully.
I did get a bargain in the Parts dept the other week - they were selling GM safety kits c/o excellent first aid kit, triangle and high vis vest for a fiver. I bought 4 for xmas pressies.