There is only one competitor on the market currently. I think the prices are right in line to be honest... it would always be nice to get them cheaper but I don't think there are any market forces that would push the mfg to get the price down at this point.
So, less hashrate, less efficiency, need to provide your own controller, AND more expensive than the other competitor? Who's lining up to buy these?
I wouldn't count the cost of the Pi in there. It can be resold and should be suitable for all current and future Avalon miners you stock. Like a PSU, its not consumed or proprietary, unlike an SP20 or S7 control board.
thats a good point dogie thanks for bringing it up.
oh a few have asked about that 1500 watt psu.
this one goes from 10 to 13.5 volts 87% efficient
https://www.trcelectronics.com/ecomm/pdf/rsp1500.pdf
I have been using it here and there. A guy on ebay was selling them at a good price
http://www.ebay.com/itm/MeanWell-Power-Supply-Rsp-1500-12-/191732204742?
I got one on ebay for a good price.