OK, for that sort of money, then get a proper paint job done, not powdercoat (one person's idea of cheap is another person's idea of expensive).
Dave Yates charges £130 for a flat colour, £140 for a metallic. This includes shotblasting of frame first. He does do a fantastic job, as can be seen here:
And before:
Dave Yates charges £130 for a flat colour, £140 for a metallic. This includes shotblasting of frame first. He does do a fantastic job, as can be seen here:

And before: