There is a few places that have started pre-ordering Civ 4 Colonization. Post here if you've pre-ordered it.

Not done yet. Prices tend to go up and down before the release. Release dates slip. From my experience always cheaper to go online but Supermarkets are not predictable.

I rarely pre-order, even if Gameslop, err Gamestop is mean if you don't.

Frustrating to me is Amazon can't seem to get games to you within a few days of the release date, you usually have to wait, so I end up trekking to Best Buy or Gamestop.