I ain't doing it for you.
All seriousness aside, I believe we have a member on here who had all his welding AND paint spraying undertaken for a paltry £1000, both sides.
There appears to be an outer arch repair panel available now, to the tune of £90 a corner, I wouldn't bother with that if it's only your sills that've gone. Any welderer can beat a bit of old fridge into approximately the right shape.
I did mine for almost naff all, cos I'm brilliant, and when I say mine what I mean is I elected to move it on sharpish cos it leaked through the body seams like a sieve.
I dare you to remove the drivers rear threshold strip and lift the carpet!