Update from 7/15/10:
Go here for the in-depth review of the YN-560 flash
Today the new and greatly improved manual-mode speedlite YN-560 has been finally listed in the manufacturer store “hkyongnuophotoequipment” on eBay. Big advantage is on top of buying direct from Yongnuo that they offer a 1 year warranty. The review is almost done too and will be posted here within the next 3 days!