I don't think Mongoose are being unfair by pricing it in that bracket - they have asked about interest on here and what people aare willing to pay, and people are responding. I think it's sensible asking as the last thing they would want to do would be to be out of pocket by releasing something that's likely to have a high selling price without seeing if there is a potential market big enough to make it worth while 
I can't afford to buy an Arachnarok spider from Games Workshop though I would really like one, and though I would pay that sort of price for a Manta, it doesn't look likely that a 28mm scale one would be doable at a price I can afford. It's a shame, but I'm not going to say 'I'll buy one!' when I know I can't - that'd be unfair to Mongoose!
I'm thinking if there was an epic scale Dredd mass combat game, I'd be all over Mantas for that...
Even if the last time I played an epic scale miniatures game was about 20 years ago...

I can't afford to buy an Arachnarok spider from Games Workshop though I would really like one, and though I would pay that sort of price for a Manta, it doesn't look likely that a 28mm scale one would be doable at a price I can afford. It's a shame, but I'm not going to say 'I'll buy one!' when I know I can't - that'd be unfair to Mongoose!
I'm thinking if there was an epic scale Dredd mass combat game, I'd be all over Mantas for that...
