Oh yeah. Most of those were sold through the Plimus shop as an affiliate. I've moved away from Plimus so most of those I can no longer sell.
Truth is I'm not sure the affiliated games thing was the best of moves. Publishing other games under my own banner (like Puzzle Bots, Gemini Rue, and two others yet to be announced!) has worked out much much better. 
Hey Dave, sorry for reviving this thread, but are you aware that the
AGS Archives site for Super Jazz Man links to a
Plimus shop site with both the game and your logo on it, suggesting it's still sold by WadjetEye Games? The
purchase link on the
Super Jazz Man website seems to suggest the same, but it's broken. I can't say if the Plimus site is still working and would allow to actually purchase the game, as I didn't dare try it, but I thought you might want to know about it.
I suppose you aren't in contact with Herculean Effort Productions anymore and you have no idea where to get "Super Jazz Men" now (provided the Plimus site is as outdated as the WadjetEye logo and ads on it)?