Unlock samsung wave 2 s8530 for free

heyyy guys could anyone plz tell me how to unlock a samsung wave 2 for free. i hve just bought one n i cannot unlock it. could anyone plz help me out???
plzzzz
Answer #1
try this
http://sim-unlock.net/simlock/Samsung/Wave%202/
Answer #2
thx but its not free:/
Answer #3
Here in uk I go to local market and the guy can unlock it for £5