I draw/sculpt as well, and I like the idea of offering a possibility to exchange my work for coins like btc, ltc, eth...
But, honestly I think amounts you're expecting to get are too high. I know this is subjective thing, and I have zero intentions to devalue your work, in fact I like the Mannequin piece but $110k is crazy high unless you are extremely famous and people will pay not only for artwork but for the prestige to have your piece in their collection.

Anyway, nice work and nice idea. Good luck with it.