I went to Argos to talk to them about a custom job.
What impressed me was the fact that they actualy make bike frames (road ones) so they know how to take them apart and put them back together again. They mask the threads etc properly and I saw a chap putting a headset back properly, not twatting it in with a hammer.
They did a custom flake job for me – perfect, spotless, faultless and delivered on time – phoned to say it was ready and put my stickers on properly then lacquered on top.
I think I paid about £200 ish – it was worth every penny.
They can get stickers made up for you if you send the artwork – but I got a local sign writer do it in ten mins for a tenner.
For a standard colour it would cost way less, but be just as good quality. The colours look quite different in different light which is why I went there to talk it over. Its a bit far for you to do that, but if your not going for fancy flake the colours on the web are close.