Well maybe not quite all. I've kept a few (how can I part with "Invincible"?) And I struggled with some of Fairbairn's books, deciding to hang onto them. Last time I looked at them, I was mostly focused on the game content -- maybe now I'll read now more for the stories he puts in.
But, this latest dump has a variety of oddballs. A few from Slate and Shell, which sadly is no longer printing them. And a handful of Chinese- and Japanese-language books that I bought myself on eBay years ago. My collection wasn't all that large, but covered a nice range of books.
And in case you're wondering, the answer is: No, investing is Go books doesn't pay off!
Have a look. Feel free to ask questions here or through eBay.