For seven seasons, John Schneider and Pete Carroll have made it pretty clear that they won’t spend big money on offensive linemen. They paid Russell Okung because they had to (as was the nature of rookie contracts before the new CBA) and while they still had a lot of cap space. They gave a nice contract extension to Max Unger but then traded him, and the contract, to the New Orleans Saints. They signed Robert Gallery to a fairly modest deal. And that’s mostly it.
The Seattle Seahawks spend less on the offensive line in the NFL and it’s not even close.