Just an update - I never heard back from @Cars4Us, plus every dealer was quoting me high 400s to mid 500s for a 40k GC North Edition.
However, that one dealer who was at 439 came down a bit more, plus we were able to apply 1st responder rebate, getting the payment to $415/month with $415 DAS, 36/12 (even tho 42 month term was way better, we cannot go out of warranty on Jeep. Both our GCs spent a lot of time in the shop! See here:
[1/12/19 UPDATE] 2018 Jeep GC needs entirely new transmission. Dealer says Chrysler won’t have part for at least 2 weeks. What are my Lemon Law options? (NJ))
I’ve placed the deposit and they will deliver to our home. All I need to do now is accept the Carvana offer and once I have the check, Ill take delivery of the new car. Even at the higher payment, we are still about $1600 ahead