Bob I'd ask your last question plus the one about battery back up of the dealer. If they want to make a sale they should be able to answer any and all questions you may have.

My old stove is in the back of my basement. No one, including the dealer, wanted it. It's an antique I guess. From what I've been told it's from the turn of the last century, a big old parlor type stove, maybe a coal burner. The "window" is made of mica. Not very efficient but it sure put out a lot of heat. As far as I'm concerned if I ever sell it goes with the house. Weighs a ton.

Of course you have to get rid of yours. Tell the dealer you'd like to offer it in trade. Maybe check used prices to see what it's worth so you have some idea what you should get. But as Twiggy said, better to accept less if you can get rid of it. Just like a trade for a new car, we all think we should get more. But most of us take the offer to avoid the hassle of trying to sell on our own.