'Flash' was one of the first ten or so RVs to come out of RV Central, so I guess I can comment here .
Nutshell: You pay a monthly fee for a spot in the hanger and have access to Jay, Jay's expertise and Jay's tools. When you get stuck you go "hey Jay, how do I do this". I would go over there two days a week after work and stay about 5-6 hours each time. Jay would help me about 30% of the time (I asked).
Is it worth it? It was for me. Example: "Jay, I'm nervous about this canopy cut. Can you help me?" It took about four minutes to make the cut - as he had done a handful. I was a nervous wreck....Jay was thinking about where to eat for lunch while cutting. Came out perfect.
I think I may have coined the phrase "A Jay Hour". It's about the equivalent of 10-15 'Doug' hours. I rented quite a few "Jay Hours" and it was a good investment. From *my* standpoint, getting my slow build RV-6 a little past the QB stage and then having Jay help me with the rest was money well spent.
Let me phrase it another way....I spent just shy of 5 years getting my slow build RV-6 past the QB stage. Seven months after I took it to Jay it flew <g>. One RV-8A flew 54 days after it was dropped off.
Well, it's been several years (in my case) so I don't know what the hourly rate is now. His number is 817-439-1220 and you can probably reach him 8am CST most days M-F. I setup an email alias for him for my personal use a long time ago, but anyone can use it to reach him.