Ebay

Whole lotta Pagan Publishing stuff: $997. Seems way extravagant, but then again it appears that someone's willing to pay $88 just for Delta Green.

For comparison, it'll be interesting to see what this run of the first 7 years of Amazing Stories finally goes for.

Then there's John Pelan's auction of the first 98 issues of Crypt of Cthulhu.

And lastly, the Necronomipotty.