Glad for you you !

Hey people : I have no idea what the price of the ticket for the 1/10 should be ...

Knowing the amount to win is 9 Times the price of a ticket... For what ticket price would you be ready to play

0.001 btc a ticket, win 0.009 ?
0.01 btc a ticket, win 0.09 ?
0.1 ??

Especially looking at gamblers here, please help me set that price once and for all !