I can't speak for guys like Spuckler, but I produce a couple of clutches a year and do not even have to advertise to sell them. They go before they are hatched.
Judging by the difficult time I've had outcrossing my lines by buying new stock, I'd hazard a guess that demand far outstrips supply.
Remember, lack of discussion or presence on the internet does not mean a snake is unpopular - it only means that they aren't being discussed by a small portion of the population on line.
There is a lot of information out there on them. Some of it may even be accurate.