I think that Hump could be the second-best player on a good line.
FWIW, I think that NFL free agency markets have gotten extremely efficient.
Take a look at the current LT market: where do you see the overpays? Yes, sometimes teams get sideways with a free agent, but they're usually gone the next year, or the market adjusts.
I don't really understand the concept of "overpaying" on a free agent contract. According to whom? The team measures what the value of a player is, and then makes an offer. No one complains about underpays for a player. Extensions (not restructures -- that's why I like to look at per-year average on contracts not what a guy is making this year) represent the replacement value of a player (often enough).