Ahh, I did not try the website.
I have been toying with the idea of buying another chuck with 5" dovetail jaws for turning plates and platters. So an HTC 125 bare with 5" jaws would be about $160 + shipping and another Nova (refurbished) with 5" jaws would be about $195 + shipping. Might be enough difference to convince me to put up with having 4 keys until I find out if I like his dovetails and if I can sell my Novas (assuming I decide I want to). Unfortunately the PSI chucks have 1"-8 threads (no inserts) for the smaller lathe so I probably can't get rid of them quite as easily.