So I checked with my favorite no BS gamestop manager tonight on their halo 3 preorder status. They were a little over 300 units so far. This is a very small store so this is kind of surprising that they have reached this level. I couldn't believe the breakdown.... Of the 300ish, about 130 were regular version, 120 were the legendary and the rest were limited. I asked twice to be sure I understood, but they are running about 1:1 between regular and legendary. So... at this store, their Average Retail Selling Price will be about $95.00.
If that pattern holds somewhat true for most stores on just preorders, the opening week for this game is going to be remarkable indeed...
Check with your local gamestop/ebgames if you know a manager there that is NO BS and see if they tell you the same....