Step 1: go to Edmunds and ask for the current MF and incentives for your zip code
Step 2: get more details from the dealer re: the $709 offer, what is the selling price, any incentives they’re including, etc.
Step 3: plug the deal into the calculator, compare the MF & incentives to the info you gathered from Edmunds
Without knowing all the details its hard to give much meaningful advice.
That said, on a soon to be slightly outdated bodystyle I wouldn’t sign for anything less than 10% pre-incentive discount at base MF. This has been the standard Costco discount for the past few months, FYI.
I would not buy a 2020 without a awesome discount as the 2021’s are here and better. Shoot for 12%+ pre-incentive with base MF. Or do yourself a favor and get the 2021 for 6-9% off and base MF.