I love the Boomkat sale.
Noise. Hulking great slabs of noise. Two long tracks that veer between feedback squall, sheet metal scrapes, jackhammers and static. Both sides are virtually indistinguishable, but the very-occasional peaceful twitters punctuate the second side more frequently, before returning to remixing the sounds of a large building site. Both tracks calm down (relatively speaking) in their second halves, becoming less percussive, but no less noisy for that. The are some vocalised noises at some point, but you can't make them out.
I wouldn't have bought this, were it not for it being in the Boomkat sale, and being very limited. But I'm glad that I did. I'm glad that someone, somewhere, is painstakingly putting together this kind of thing, and someone else sees fit to release it.
I also like Ahlzagailzehguh's penchant for the cassette-only release.