Yes -- they were released in the same quantities as all the other figures... so they shouldn't be too hard to find (if you want to know who the traitor is, all of that material is still present in the novelization...).
Yeah, the crosses were delayed a bunch initially. $45 isn't a bad price. That's about what the original MSRP was quoted as. There's one or two internet knife stores advertising the cross, but I tried buying them a couple years ago with bad results. At least one didn't ever reply to my order request, and another processed the order and never did anything about it. Had to file a claim with paypal and get my money back.