I'd check to see that the smaller quote covers everything to be sure. If the contract says "up to 61SF" that's what you're getting, not an inch more.

This is a fairly easy calculation for you to do to double check.* It's likely that the larger estimate is just covering his bases so that he doesn't have to come back later and and say, "Oh, gee, you know that 62.5 sq ft I said? Well, it's really 64 sq. ft. Sorry about that. That will up the price $x." Ouch. In the end either fabricator will measure accurately at template and know exactly how many square feet. If the contract is per sq. ft., then the final price will be based on what they actually measure and cut, not the original estimate. I know our original quote was based on our measurements, but the final contract was based on theirs. Actually, they were the same, but you can see how we might have not gotten it quite right.

Thank you both! Will do.