Yeah it's the most Pain-in-the-ass job out there.
First you have to be able to match the style (or style requested), much stricter than most new head requests IMO. Then make the same shapes and designs in that style, again, much stricter than a simple req since your ways of shading might not translate to the head.
Been working on an upscale job for a few months, very on and off, because it is VERY tedious and not too satisfying. Especially when you gotta seriously do your best shading to match the original (twas a mantrain head), cuz it'd ruin the point if any parts were degraded in the process. Fortunately, the head here is much easier to improve on, for any possible takers of this request . I'd do it, but I'm too busy.
30k is a pretty fair price, justtoletyouknow.