Now's a good time to check your insurance policy. A local agent tells me if it says you get "replacement value" for your roof, you should be good... even if the price increases.
If you happen to have any problems - with any type of insurance - the Oklahoma Insurance Department has a "Consumer Assitance/Claims Processes" division. They investigate complaints and answer questions regarding insurance companies and policies.
Here's a link to their page:
Or you can call 1-800-522-0071