That's 0,1 ETH.

Moreover, there is a discount system for investors at the Token sale (ICO):

Tokens will be sold at a price fixed in US dollars according to the following system:

• $ 1 000 – $5 000 = 3% bonus
• $ 5 000 – $ 10 000 = 5% bonus
• $ 10 000 – $ 50 000 = 10% bonus
• $ 50 000 – $ 100 000 = 15% bonus
• More than $ 100 000 = 20% bonus