iPhone 3G earpiece problem

I've now an iPhone 3G with 4.1 OS and 06.15 baseband. Jailbroken and unlocked. The only problem now is that the earpiece does not work. So the plan is to replace the earpiece. I have two options, either send it off or do it myself. To send it off is about £35, to do it myself is about £4, so I'm not sure.

Here is a youtube video on how to dismantle.

Here is a video to replace earpiece.

Otherwise, I could take it here and get it sorted for £29.00 excluding postage. Or this one at £35 which has good reviews.
Thinky, thinky, thinky.