God no...
10$ monthly? Nooo....
Max is about 2~3 $ per rig with 5 or more gpus is enough.
At the beginning i will do 1~2$ per rig per month.
+1
People should be willing to pay the price you set. Pricing concerns the psychological limit.
Everyone can pay
$ 1-2 per rig per month. much more, can be disturbing.