Very hard when we never found out why the IOT branded sparrow 360 was quoted as been superior to the aee sparrow 360. I asked the question several times but never got an answer. An " I don't know" would have been sufficient. Anyway how many ROVA , sparrows, do they have to sell to make a profit after all the expenses, wages are paid for the year. Let's say IOT make 80 bucks per unit. How many do we have to sell.