I have bought alot from him both used and new and never had an issue. Like everyone else has said he does work by himself and he does get very busy at times but you will be very hard pressed to find a better guy to deal with. His parts are not cheap but neither is the quality, remember you get what you pay for.
Patience is virtue, I paid just shy of 1,000 for misc parts from another popular vendor on here and didnt get the last of my parts till almost a year after I paid. I cant help but laugh when some people get all bummed out after waiting a week. No offense to the OP as I know he waited quite some time.