Capcom interview on Gamasutra (TVC sales, MHT promotion, etc).

[SaviorX]

"We're not at all dissatisfied with the sales at this point. We are cautiously optimistic that it's going to have long legs..."

Sven does not sound to sure of himself here. The sales obviously haven't met expectations just yet, so you have to hope the game just doesn't fall off the face of the earth. I think, when it eventually hits that $25-$30 price point, sales will be fair each week. With sales of the previous TvC included, it will make it past 500k...one full year after release.
Heck, I'll make it 550k lol