Don't be angry, but:
You = 2250 KH/s / $2050 = 1.09KH/$1 @ 850w
Gridseed 10 Pack = 3600KH/s / $2500 = 1.44KH/$1 @ 80w.
I don't know what you paid for your hardware, or how you value your time in building it, but you're at least $500 too expensive. That's not even comparing to the gridseeds, that's just pure GPU rig costs. If I were you, I'd at least be open to offers.