I am one of shdvb's VERY happy customers, although I haven't actually bought from him in a couple of months. The fact is he gives a fast, efficient service and is welcoming to newbies. Then, when you have finished the trade he asks you to leave a vouch in his thread and offers a bonus on your next trade for doing so (or at least used to). There is nothing going on scam-wise there, he is just running a great exchange business.

I would be happy for someone trusted to check the PM's between myself and him from a few months ago.