In General, not many QB's/LT's/and Pass Rushers are traded in their prime. But there are some examples.
Cutler - 2 1st rounds 3rd and 5th and Kyle Orton
Peters - 1st and 4th
Cassell - 2nd Rounder
And I don't think any of those guys are as good as Clady.
I say 2 1st Rounders, 3rd, and a serviceable player may be fair IMO.
I think the cutler trade is the only comparable one.
The Peter trade it is universally agreed the eagles got him way too easily, and for all the talk of the Pats being trade geniuses I honestly believe the chiefs absolutely fleeced the pats on this occasion. Remember the pats sent vrabel and cassel for te second rounder - but look what the eagles got for kolb!!