New stuff is out there, just hard to find.
I bought a lot of around 50qty boxed software separated into two different auctions from a guy. All in all, about $120 shipped - not too bad.
Among them was a new/shrinkwrapped Phantasmagoria, Inca, Incredible Machine, King's Quest V, and (SCORE!) 1987 original/minty Mixed Up Mother Goose. Not to mention several other titles that would separately run about $30 each to purchase before shipping (all of which I was missing from my collection).
Was a nice find... Also scored a few other shrinkwrapped copies of games like Gabriel Knight Mysteries (consisting of games 1/2), Police Quest: 4 Most Wanted (not including SWAT - hard to find), LSL6, KQ6, Thexder, and another KQ5 copy (different box).
I have my opened ones... a few of the shrinkwrapped copies I might keep.. Others, I'll let loose of for the right trade; I'm still missing a half-dozen of the regular Sierra games before I finish delving into the boxed/complete collections (currently just missing the two QFG collections as boxed/complete copies, and the 15th Anniv SQ Collection)