$80 was a special promotional/sale price at Target not standard RRP, and that was for straight Takara Magnus's that Hasbro must have got a hold of.
If were getting the full Hasbrodisation here + factoring Toys R Us, then I doubt we'll see that happen again any time soon.
Actualy I think Grimlock is better scaled with the MP seekers and Binaltech than some of the other MP's. Its Prime, Magnus and Megs who are to big.I know Prime was a big fellow but I don't recall the other Autobots only only being as tall as his groin.