Thank you for organising this: I don't know Zack Best, but if he and his family are in need this is a good way of helping him and I am glad to be able to contribute $10 along with prayers for all those affected by his illness.
As for the actual items, even if you're a hard-nosed gamer out for a bargain and not a soft touch like me, this is still worth a look! There's an engaging mix of old and new materials - including one book I have been trying to get hold of for 10 years! - with a mostly fantasy feel although SF fans will find a couple of Traveller-compatible books from Gypsy Knights Games.
So please consider this good cause and get yourself a good read into the bargain!