$1000 at least required to invest in Optherium. 
I don't have enough money to invest, honestly.
Anyway, all best wishes for potential growth of Optherium.
Well, this is temporary. In the next stages of ICO, usually the minimum amount for investment becomes available to almost everyone.I don't have enough money to invest, honestly.
Anyway, all best wishes for potential growth of Optherium.
How many stages of the sale of tokens will the project have? At all stages you can get bonuses?