I don't think anyone has mentioned this on the forum yet.
Steam's now selling a bundle of games called Cyan Complete Pack -- which includes realMyst, Riven, Uru, Manhole and a few other Cyan games that I'm not familiar with -- for $19.99. realMyst and Riven are on sale individually for $4.99 each.
http://store.steampowered.com/sub/4870/
