There are some orig ones on ebay at the moment from a US Seller. The repro ones were sold by planet bmx/colored tuffs a few years ago. The initial run sold out, but they have made another batch due to the release of the new skyway 20 & 24" frames. They've prob made a load this time, as they are available for order on planetbmx, and i've seen a few sets on ebay.
Here's a few pics from bmxmuseum showing the differences to the knurling between the original & 2010 ones