Originally Posted by queerpunk

Track stuff moves in such small quantities that the same purchase patterns for road stuff (like the ability to buy groupsets on greymarket retail from the UK for less than wholesale in the USA) don't apply.

That said, ebay and aliexpress both have lots of taiwanese built carbon track frames that are often purchased, relabeled, and re-sold for a lot more money by other brands. Two stand out - one of which has a rep as a quite good budget sprint frame, and another that's essentially a copy of a Cervelo T4 (which is one of the most popular bikes at the national-team/world-cup level) and is reasonably popular with enduros.