Guys, i'm italian.
here, to build a gpu mining rig, whit 5 r9 280x for a 3.6 Mh/s, you pay about 2000 euro.
estimated consumption even undervolting cards, is about 1.4 Kw/h that costs about 5.00 euro/day
the Gridseed ASIC, if i right understand, have 5 chips even "usb device" and it can do about 300 Khash/s for a consumption of about 30V. so, 10 device that i read cost 1360$ (1000 euro) would get 3,0 Mhash/s for about 300V. power costs is about 1.10 euro/day

ASIC miner 1euro = 3 Khash/s + 1.10 euro power/day
GPU miner 1 euro =1.8 Khash/s + 5.00 euro power/day

assuming that 1Mh made 0.01 BTC day:
asic miner made 0.03 BTC/day that is 25.5$ (18.75 euro) - power (1.10 euro) total 17.65 euro/day net (time to autopay 57 days)
GPU miner made 0.036 BTC/day that is 30.6$ (22.50 euro) - power (5.00 euro) total 17.50 euro/day net (time to autopay 114 days)
not counting space problems, overheating, noise etc.

in Italy, Gridseed ASIC is much more profittable than any GPU for scrypt mining now.

(change EUR/USD 1.36)
(change BTC/USD 850.00)