Very true; I didn't write it, but my unstated assumption was that teams are spending more for quality QBs. And no, giving a scrub big bucks just means he's a highly paid scrub - doesn't improve the team or increase success.
And the Bills, with the re-signing of Cassel at $900k, now are 2nd from the bottom in QB spend at $3.3 million. The only team spending less... is the Oakland Raiders at $1.8 million, but they only have 2 QBs signed; the Bills have 3.
http://www.wgr550.com/Rex-Cassel-2-EJ-3-QB/21940434
Like I said, Tie-Rod could be the greatest thing since sliced-bread.
Odds are though his performance will be what one expects from a $900k QB these days.