Hi There:
I am selling these guys as a plug and play package for $1800.00 OBO - shipping included. 20 Units with all accessories + Rpi.
Professional Volt-modding and running stable. These are volt-modded, so they will get to 10+Mh/s.
No muss, no fuss. Plug and play with Raspberry Pi. 10+ Mh/s. Yes, you heard it right. Just plug it all together and start hashing.
You will have a better ROI than I did buying them new.
Which sucks, but 'tis life.
These units as a package are competitively priced with the lowest priced blades, but afford better cooling, and are known to run with more stability.