OP you made the right call. $600-$650 was a good target for the Kia Stinger.
For others: my point with the comparisons is that $800/mo is not a good deal for a Kia Stinger, because there are cars that are more premium going for less, even from brokers.
For example: this hacker got $689/mo for an A6. (That’s pretty good. And, if you think a Kia Stinger is more premium than an A6, I can’t help you.)
