I've had a harder time finding the Heritage cards and the books than I have the toys. I haven't seen so much as a single pack of Heritage cards anywhere (and when I've asked about the hobby cards at comics shops and the like, I've always been told they don't carry trading cards these days unless they're special ordered, and then have to charge a lot for them; the retail cards seem just about impossible to find - I don't even know where to get them online), and the only book I've seen is the anthology reprint of the first three movie's novelizations - none of the junior novelizations, none of the reprints of the '90s novels, nothing. The toys, OTOH, I've seen at Toys 'R' Us, and I fully expect to see more elsewhere.
(This is just the newest stuff, of course; the four LEGO sets from Raiders and Crusade I've been seeing on and off again lots of places.)