Sony Ericsson unlock

HeadAboveWater

I'm switching from Orange to O2 but need my phone unlocked. I have a Sony Ericsson Elm/J10i2. I do realise I won't get a code for free, but Orange want to charge me £20. I've checked with the local mobile repair shop and they are also quoting £15-£20 but they'll need to send my phone away for a week
Can anyone recommend a website where I could get a code for less £ ??
Your help is much appreciated, thank you

DUTR

If the mobile shop is quoting that price, you may not find it for any less

HeadAboveWater

Thanks for your reply. I've had to go with Orange as it means I won't have to send my phone away. Just have to wait 20 days for the code... Plus I've had to buy a new phone to last me til I get mine sorted. I'll sell it on ebay once I'm up and running, or it'll do as a wee 'just-in-case' phone as it was only £15.
Thanks again.