Hasn't exactly been dominant? He's easily been a top 10 tackle the last 2 years. And I have no idea what you're talking about with the $5M per year market. That's way off. Albert's franchise payment is $9.8M, which is the average elite LT compensation.
Take a look at how the best LTs are paid:
1. Jason Peters at Tackle $10,400,000
2. Joe Thomas at Tackle $10,000,000
3. Ryan Clady at Tackle $9,828,000 franchise tag
4. Brandon Albert at Tackle $9,828,000 franchise tag
5. Jordan Gross at Tackle$8,700,000
6. D'Brickashaw Ferguson at Tackle $7,250,000
7. Russell Okung at Tackle$7,060,000
8. Doug Free at Tackle $7,000,000
9. Michael Roos at Tackle $6,000,000
10. Gosder Cherilus at Tackle $5,500,000
http://www.spotrac.com/top-salaries/nfl/tackle/
LT is a premium position. And we have a very good one. You can see from the list that some of those guys aren't earning the contracts they got. But that's the market. Drafting a tackle because you can save money is idiotic any way you look at it. Some teams struggle to find good LTs. You're justifying letting a good one go and hoping to find a new one all for the sake of saving a few million dollars of Clark Hunt's money. WTF?