Well thanks for the info...didnt realise it varied so much.
When they repaired mine they took the tyre off and used the plugging method, it took all of five minutes.
The thing is I bought a pair of Falkens from them only two months ago and feel a bit peeved that they didnt budge on the price, trust me I wouldnt have let them do it if Id have known the price in the first place...anyway just emailed them and told them that I wont be using them again when I purchase my rears in a few weeks time on the strength of what theyve just charged me...there loss!
Cheers again
Nick