I got an interesting board that mines with 8 FPGA chips, really 4 icarus on a single board. So you're getting 380 mhas * 4, more or less 1500 mhas. I'm looking to ask arround 1100 $ for it it consumes just under 80 W of pci-e adapter.
A bit noisy since 8 fans but stays super cool.
this is the manufacturer's link - and you can see that the original cost was 2000 $ plus shipping.
http://item.taobao.com/item.htm?id=14590459436PM me if interested
Alex