Hello Minh,  We are in process of testing the RIP Beta and the only RIP beta shaft that has passed inspection is the X flex.  No other flexes have passed our inspection at this time.  We don't have a timetable for them passing inspection because it takes a while for them to complete durability and what we call "shaper" testing.  The RIP Alpha is stock and at no charge, but there will probably be a charge for the RIP Beta and the Gamma because we will not be ordering thousands of those shafts.  As of now,  we don't have any pricing.