I searched around a bit on the Hoffman board (I don't post there) and it seems only the first six are actually by Alan Yoshida, Out To Lunch among them. Apparently he has requested they remove his name from the others. Also, it seems HD Tracks do not always provide the best customer experience. So, I'd proceed with caution in the event you're thinking of buying any more of their releases.
I'm glad Out To Lunch wasn't a disappointment to you. I also think the prices are too high. Also, on the Monks, you get none of the alternate takes from the RVGs. Misterioso (on the RVG Milt Jackson) is there, but Criss Cross isn't, not even the master take. Perhaps this reflects the track lists from the original LPs? Still, it looks like they are trying to maximize profit in an unpalatable manner.