Getting real JDM parts is as close as some of us are going to be to getting one off / custom parts. If you buy something that hardly anyone else has it's original to a certain degree.
Yes, at some point if it becomes a trend that won't hold true, but even then you have to think how many people have whatever car you drive. Then how many of those people have whatever JDM part you got? Probably not very many.
I think that's what appeals to most people. Easy access to making your car stand out from the crowd.
__________________
Got a 1995-1996 240SX? Want a new front bumper?
Check this out. Posting on drag first to try and avoid shipping it.