I have a few limited edition hard bound lhp books I bought for collectability value. Pretty interesting reading, qlippoth opus 3, which is still available on nephilim press is based around the inverse of the tree of life: the tree of death, which is supposed to be aiming at union with the void rather than with god.
Book of smokeless fire is a grimoire for summoning and commanding djinn. Is no longer available though.
https://nephilimpress.com/
The book of abrasax and the holy gaurdian angel which are linked to on amazon on the front page are good too, but they're not exlusively lhp.