Has your lawyer mentioned how much tax you would have to pay on such a windfall?

Actually nothing because in some countries there is no Capital Gains tax
Now, how about just refunding as Hashfast in the first place and let us worry about any taxes?
Italy is not "some country" and has 20%+ capital gains tax.
I'm in Belgium and we don't have any Capital Gains tax. How about you start shipping the equipment I paid for in September 2013?
I'll even take a refund.
how about that?
Plus possibly more for windfalls like the one cedivad is anticipating.
Let us wonder about the grown up things and you stop pushing HashFasts vapourware? Stop trying to lure in other punters so you can get pre-order money. You know, the money the pays your wages and lawyers that keep you in business but prevents you from actually shipping out an actual product people paid for?