not bought from them but have bought from other taiwan-based ebay traders. Given theyre getting stuff direct from the factory and selling it without distributor/importer/high street shop overheads theres no reason to think their stuff isn't genuine.
They have some stuff branded up as Marek, which they explain is an own-brand name for the factory that makes Ritchey and other OE carbon stuff.
If you check out the US mail order giant http://www.supergo.com theyre doing easton carbon stuff half price (so 50 quid for a CNT monkeylite bar) so direct-from-taiwan prices should be good.