Ok wow.
He is really, really, really nice looking. I can see why you are having a hard time deciding.
If you told me he was an enchi, I'd believe you. I know you hesitate to sell him as such, because if he isn't, the buyer would not be very happy with you. I would have no idea what to ask for him.
If you sold him as a 100% het pied male, you could probably ask $150-$175. Figuring in his unique pattern, I personally would add another $50 - $75 to that figure. If you are uncertain as to the het pied part, then it gets really tough. Given that he's so unusual, I'd guess you could still get $100 - $150 for him as just a dinker male.
If you were close to me, and depending on his price, I'd almost be willing to take a chance on him myself. Bred to a spider, clown or and other female with reduced pattern, I'd be willing to bet he'd throw some sweet babies. I know I'm not much help.
Gale