Frustrating times in the Tortoise household - Suggestions?

Question

I know I can tell long stories. I'll try to keep this short.  Q: What resources would you use to find out the trade in value of a 2015 car?  Car is too new to show on kbb. Only the base model is shown, but no detail on various models. I even emailed them and they said not enough data (or something like that). Someone posted a link somewhere here about black-something. I got a value there.  DH is frustrated with his several month old car for a couple reasons so we started to see how difficult it would be to get out of it into something new. He's looked at a couple places and the offer for his car has swung $4k. The first one was lower than what we thought (partially due to an error on my part reading the aforementioned site), but the next one was $4k lower than that. Really ridiculously low. I've suggested going to Car Max a couple times. We had good luck getting a price from them once before and then using that price as a bargaining chip and the dealer matched it. DH said it was a horrible experience. I don't remember it being bad, but it was his car, so that could change the perspective on the situation I suppose. I think it's Starting Over that said it's what he (or she) has used in the past or another place like it.  I'd love to take DH's car there just to see what they'd offer, but if it's near the lower value, it'd be quite the blow and I'd rather not endure that (I'd rather he not endure that). If it's near the other value we were offered, we might even pay to get out of it (assuming that's possible). We can't go back to the dealer where we were offered that as he's moved on to a totally different make for a new car. 

Answer 1

 Is he putting the car on Mecum? If it's a new car like, trust me they will put it on their own lot to sell it. They are just trying to get for the lowest price, isn't that what we're trying to do?   I don't begudge them for doing this, but it's a bit rude especially if you know what it's worth.  The dealer that said mine was worth only $10,000 was based on what recent cars like mine have sold on Mecum for. I've had two dealers tell me they'll give me what I want for trade not a problem, of course I will have to watch the numbers on the other car.  Going to Car Max is an option and I thought about it too, I may do it since it's free and only takes up to 30 mins. 
 Of course you could sell it to Car Max, but you'll be responsible for the rest of it. I don't know if a new car dealer will roll that leftover amount into your new car loan, I don't know if anybody has tried it, but I would imagine it's possible.
 Basically you would have to cash out. But depending how much you owe there might be enough incentives to pay the outstanding balance. In my case, Ford is putting anywhere from $3,000-$4,000 on the hood. If the rebates are submitted online and not by snail mail, it takes as little as 10 days to get your rebate vouchers in the mail.  That is more than enough to pay off the negative balance. Let's say Car Max gives me $13,000 for my Accent; I would owe $2442. I could buy the new car, sign the rebates I need to be sent to me directly. Once I get those (10-14 days later) I can deposit them in my bank and then write a check or use my debt card to pay off the balance.   Or  You could use one of your high limit credit cards to pay off the rest of it.