What should I do now? Do I just communicate with the RA and they will have to increase funding? Is there a FAR reference I didn't find that may guide me through this?
If a quote has expired, the company has no obligation to honor it. Actually, a company has no obligation to honor any quote because when using FAR Part 13, a quote is not an offer for legal purposes; it is considered "informational." If the company was the only one that responded to the RFQ in a timely manner, I see no reason why you can't add the additional funds to the PR and award at the higher amount.