If You are trying to unlock your phone - DON'T BUY ANYTHING OF EBAY. Nobody can unlock a phone apart from a network operator or authorised place. These 'unlock your phone for 99p' scams are what i say - SCAMS. They have a 'give what you get' scheme as well which means if you buy it and it doesn't work and if you don't want bad feedback you have to give good feedbback! they say it works '70%' of the time but there lying saying that. it works 0% of the time.
if you want your phone unlocked get your network operator to do it for you. With some networks if your phone is more than 1 year old they will do it for free!
hope this has been usefull and heed what i say