we had a puncture on sunday on route to MITP,luckily only 20 miles out of Norwich,had to come home get the other mini,had the run flat replaced on Monday £160.00 for one tyre,ouch !!
Did ring round a few garages,the general opinion seemed to be that nobody would repair a run flat,but at £160.00 at least per tyre its not surprising garages want to replace and not repair.
On the silver mini we have taken the run flat tyres of and replaced with normal tyres