and hey what will 2 cents get you now a days anyways? A whole lot of opinions, that's about it...
To me it looks like an Axanthic, assuming you didn't miss any yellow coloration. Which seems unlikely. It looks like a VERY beautiful nile monitor. Here is my opinion on the whole issue.
The albino niles seem a bit ridiculously priced. Sure they are a main stream pet monitor, but not for it's attributes as a pet! They are a main stream pet monitor because of it's abundance, and ease in which exportation from it's habitat is allowed. I assume you got it in as a normal, since you traded for it, and also due to the fact that you didn't seem to have any idea you were getting such an animal until you noticed it didn't have yellow. Obviously, as you've noted you can NOT sell it as an axanthic....you haven't proven it to be. But you can sell it as an imported nile with the appearance of being axanthic. Then the logical question pops up, what is such an animal worth? Well, whatever someone is willing to pay for it. Your offers in the $1,200 to $1,400 range I suspect are at the top of what you will recieve for such an animal. The only reasons the albinos for sale, are offered at such high prices are as follows:
Few in existance.
Albino anything, whether rare or not is eye catching and notorious.
The people that have them, don't truly want to sell them!
Although it seems reptile haven, may have changed their intentions of keeping the nile morphs they have... although they seem a bit brainwashed by their previous claims at price and believe these animals are still worth the copious amounts of money they've been offering them at.
At any rate, if you want to have fun and tinker with a potential new morph do so... if you don't sell it. If you don't want to do either, call up Ben Siegel, Chris at Reptile Haven or the like, and see if they are interested in trying to breed their albino nile to your "axanthic" to see if you can produce some "dh" snow niles. I doubt either would be interested though(assuming they are of opposite sex from yours anyways.)
Even if it is an axanthic, the only value in the market place is to breed it to an albino. Then once you have snows, fantastic they are in existance. They will never be a hot commodity. You need, calm, easily housed, easily bred attractive animals in order to even consider starting a morph revolution in this hobby, and well Niles just don't have it. They are great lizards for what they are... pet's well few are that. Just because they are not what "PEOPLE" want, doesn't mean they aren't great for what they are though!
Good luck, and my suggestion is take the $1,200 and send $600 of it back to the guy you got it from! lol
As far as getting defensive and feeling insulted by the emails and posts against your claims at it... seems you need to toughen your skin a bit, and not make subtle jabs about people's relationships(James)... that's just my opinion though. They're like.. well you know what I mean, and everyone has one! Either way sell it or don't... but you should try to avoid using the forums in this manner, before a rule nazi comes around and makes sure you aren't trying to use this as propoganda to sell your "axanthic" nile 
hasta,
Jordan