Im based in south b'ham and Bournes powder coaters did mine for £80 all in for 4 stock 17" rims, exellent finish and would appear to be very cheap as well. If its any use to anyone there number is 0121 666 6595.
Think the split rims are a totally differant proposition though espiecally if there leaking, youll need to have them split and re sealed, how bad is the scuffing you mention ?
I got a bodyshop orbital sander and just carefully went round the outer edge of the rims until all the scuffing had gone, i started with a course 180 grit pad and finished off with a fine 800 grit pad, now there done you wouldnt know they had ever been scuffed.
Regards
Andrew(dunk)Shaw