I get the appeal of buying unopened junk wax boxes. For some, it's hard to beat the nostalgia factor and the ability to rip a bunch of packs for $20 or whatever. It's not for me, but I get it. It's much like those buying monster boxes of junk. There is a chance the box wasn't completely picked over and still has a few decent cards. There is also a chance that a few good cards are in there from outside of the junk wax era. There are even some hoarding junk wax while they watch others throw the cards in landfills and burn pits. It's going to take a lot of burning until there is significant value, but "one day" is the hope I suppose.
Junk wax isn't for everyone.