Then lets work on that. Theres nothing more valuable for you to learn when trying to get a good deal than being able to determine what that actually is.
You can not effectively negotiate if you dont know what the deal you have in front of you is and where youre trying to be.
If you have positive equity in the car and the dealer isn’t cutting you a check, that means that you are effectively giving that equity over at signing.
Your effective DAS is the $850 + the positive equity of the car.
Just use a broker, there are plenty in your region offering volvos. Take your equity as a check, not roll it into the next lease. You don’t HAVE to sell your current vehicle to the dealer facilitating the next deal. What folks are trying to tell you is get quotes from multiple online entities.
Please look here for brokers. All are reputable and legit:
This thread will show you the numerous places to value your current car:
I don’t have the knowledge or memory that other posters here do, but my impression is that other people have posted offers of a similar monthly WITHOUT any trade equity. So, yes, I think your deal is actually quite awful.
You can do a search on the forum to see what other recent XC90 deals have been. You can also, as others have mentioned, look at or even reach out to highly-rated brokers to see what they can offer (and to get a sense of what a fair deal is), if there is time pressure to get a new lease.
I don’t know if you should sell to Carvana/etc. or to a dealer. I do know that you need to be looking at the total cost of the lease (including equity) to be able to get a better sense of your whether your deal is fair or not and whether you should sell to dealer vs. 3rd party. The dealer may offer you more… but what if they are leasing you the car (minus the trade) at a much higher price otherwise?
The other posts here have given you lots of info about how to evaluate the deal.