I've been watching this and the 550D for a short while, since testing them to shoot the Aurora recently.
The price at Amazon has dropped today, to levels close to the Grey Import retailers.
I prefer the size of the 7D compared to the 550D, and with the weatherproof specification, I think it meets my needs perfectly.
Posting here, as Amazon have a tendancy to be very fluid with their prices.
I ordered it with the grip as well.