Well, there is always Ebay. I have just bought my 17th version of RTK off of Ebay, I wasn't aware it was available via' Amazon....yes, I go through a lot of them, due to kids getting a hold of them, kids stepping on the CD's, my personal best is keeping a RTK set for an entire year.......I still wish there was some sort of RTK expansion pack (Return to a 4-Star Pub? Return to a Dark Hotel? Betrayal At McDonald's?)....but of course, that will never happen, lol.