You just made me sell my 10 BTC BLOCK with this one
Hehe, you took the right descision. There is alot of greed involved here. If they could, they would have taken those 500BTC and say "ok we decided its enough with 500 BTC.". I was afraid of that. Scheme.
And you would do well to remember that Bittrex, not us, is enforcing the rules of the ITO.
We are not able to change the rules and decide that, say 500BTC will be enough. It's 850 BTC or nothing at all.