I genuinely believe that is has something to do with the pricing structure. I'm sure this will generate eye rolls, but the numbers don't lie everything sells out but it's hard to find resale. I really think it has to do with the fact that his fans in the few corners of the web buy them for super high and cherish them for that reason.
also, he only presses 750 at the most and that was Tuez Les Tous
this one has 450, Kill Em All was 500, Tuez was the most cuz Fatbeats did the extra 150 copies. WKJ was 300 splatter and 200 pic discs
EDIT: I forgot SNL the EP but Nature Sounds did that and it's only 30 bucks so there r alot of those floating around,
Bulletproof Luh may have had a little more copies pressed, but that sat on Bad Taste Bandcamp for 2 years and most didn't know it existed. However that has been removed by Mach as of last week