Soldato
little as a fiver?!?!?!?!?!?!? for a few bits of bent metal its a complete rip off!!!
Just do the ***** option like I did.
Go down to Halfords, grab a few radio keys and ask if you can take them out to your car to find out which ones are suitable for your radio. It's quite easy to open the box without damaging anything so it's not like they're not resellable afterwards.
Remove the radio then go back in and tell them that none of them fitted.