At 300%&$#?@!%&$#?@!%&$#?@!8364;, which is only slightly better than the pricing of the eBay posted prototypes.
The average selling price for the V500V2+ on Majsta's eBay actions is $617.11, the cheapest went for $537, if you include the earlier non-plus ones the average would be even higher and the cheapest only drops to $533. So 300Eur is more than slightly better than the eBay prices which don't guarantee you'd win one, where as you are guaranteed to get one at 300Eur as long as they are able to maintain that price (should be OK but if Intel/Altera decide to add $100 to the price of the FPGA then that's beyond the control of the Apollo/Vampire guys).