I have talked to Kevin many times and he seems like a great guy. I have only heard good things about him, and his reputation is too established, in my opinion, to rip-off anyone on these sites... and I doubt seriously he would rip anyone off PEROID! I am sure you will get a great ride!
ps. If you need a stock rear sprocket, let me know, I have a few on them, one with 400 original miles.