I'm seeing prices continue to soar, not stabilize. Especially NES stuff, which is the focus of my collection and especially CIB/complete games. I've seen CIB Gargoyle's Quest 2 sell for over $200, Metal Storm and Bucky O Hare for well over $100, Castlevania for over $75, etc.
The rarest games seem to seem to have doubled in the past two years. Little Samson has jumped from about $120 two years ago to almost $500 now. Others like Flinstones Dinosaur Peak have also tripled to over $500.