RockMiner shop offers Avalon4 Module for 1.335 BTC (480 USD in case BTC=360$). http://shop.rockminer.com/
It's interesting, RockMiner partners with AM, has joint cloud mining service, nevertheless promotes competitors.. Perhaps Friedcat indeed has problems and RockMiner is planning plan B - partnership with Avalon. But 0.5 W/Ghs chip in 2015 - poor result.