schoolDebate.com or debatingClub.com would of course be more useful, since most teens debate as part of school clubs/competitions; but there's still a lot of room for this name IMO, and if you don't mind the legwork it might bear fruit for you to google all the school debating teams you can find sites for, and approach them with this dn for sale, for a reasonable price. It has nice simple keywords for the kind of site it represents, and although it's not an exciting name it is abundantly clear and memorable, so I think someone may like it enough to bite.
I'd have to say low value undeveloped to a reseller, though of some value because it does obviously meet some standards; say around anywhere xx to reseller.
To an end user, it's easy to come up with debate names so you wouldn't want to overprice this or they'd simply get a more imaginative one for reg fee; but it's so nice and clear that I think an interested party might pay anywhere around low xxx to upper-middle xxx; I can't see you getting much more for it, unless they were DYING to have it, because it isn't huge corporations or rich clubs that would be buying it, probably.
Good luck, I like the name.