Interesting. I've not had any bad dealings with RD. Some of his listings are comically overpriced. Other listings are basically in line with others. I buy from him when I can't find an item elsewhere (or if he's the cheapest). So far, everything has come to me fast and without issue.
He has Homelite intake boots that I believe are newly manufactured. I used one of his 750 boots a while back. Quality part that worked fine. Have also bought a Homelite clutch tool, some NOS Mac parts, and a few other things that I cannot remember. Maybe I've just been lucky...