I was in contact with a company last year who does the aurora finish. They quoted me $450 for the entire marker, however, after giving me the quote they stopped returning emails/calls.
I am about to have it anodized, however, if I could get it aurora'd I would.
We have done this before... the price is $450. The lead time can be extensive, since the process involves several steps. We cannot guarantee the outcome of the function of the piece, only the decorative finish we've applied.
Generally there is no issue, but we like to fully disclose our policy.
It was with Tanury, which was posted earlier.