I guarantee you there's someone on here who can help you out. But "who" depends on what you are talking about. Are you looking for a completely finished helmet that you can just pull out of the box, put on, and go? Or are you looking for a Pepakura or 3D printable model that you will print and assemble yourself? The prices vary greatly between those two options, but if you post that information, we can at least suggest people with whom we have worked or know do good work