i don't get this 'exclusivity' thing. or maybe i do. there's a waiting game involved in finding an attractive frame in a given size from the handful of people and shops who import them, or lucking out on ebay or craigslist. the larger the size, the more uncommon and expensive it'll be. the ones that do turn up tend to be really attractive lugged or filet brazed frames, made by seasoned framebuilders. and the interest? the used frames that i've seen tend to fall around $500-$700, complete a really nice bb and headset. there's not a wealth of non keirin lugged steel frames popping up. as much as people may hate the njs stamp, it at least says that the frame tested to have a certain durability and strength. they seem to be a perfectly reasonable choice for recreational track racers who like quick handling on the street. outside of internet fixed gear forums, pretty much nobody gives a rat's ass about keirin or njs, and nobody's forcing you to be here.