So, my question is this..how much will you pay for that exotic cartridge to insure that you are buying it from a "legit" US rep
That's easy: Zero!
But then I have been doing this a long time, and been privy to the realities of wholesale/retail markups long enough to know how insanely profitable such things are. Not only cartridges by the way. Typical wholesale-retail markup is over 100%. Well over.
My Benz was bought new in a factory sealed carton from some guy in Europe, and my Koetsu was bought new in the factory box from some guy on eBay about a year ago. Whatever slim risk there is isn't worth it for a few bucks but we're talking over a grand here. Sorry. But you want that much of my money you need to do a whole lot more than try and scare me with "gray market". Gray market is BS. Its a global market. Either its all gray, or none of it is. I say none.
That's if we're talking what I'll pay for that particular peace of mind. Because the risk to me is not is it legit or not. That's simply the wrong question. DYODD you can eliminate that risk.
The proper question is, how much will you pay to be secure in the knowledge that if you do not like if for any reason, any reason at all, you can just bring it back. That means home auditions. Some guy wants a couple grand profit and has a couple solid contenders I want to hear, no problem. No problem at all. He's earned it.
But these guys that think they deserve big money like that for being nothing more than a glorified shipping expediter, they can go.... well let's just say they can go find someone a whole lot less capable. Which should not be a problem. They say there's one born every minute.