FYI - the sketchbooks have sold out and we're going to reprint. I don't know exactly when this is going to happen, but I think in the next month or so. If you want us to tell you when the sketchbooks are back in print, send an email to firstname.lastname@example.org
and we'll let you know.
Poster prints are still available. We sent another batch over to DR last week.
EDIT: And to give an update on some of the estimates I made above... CD versions of Out from Boneville and The Great Cow Race are still on hold due to the new versions of the games that are coming out very soon. I think the medium DeSoto shirts will be back soon.