Well, why not ask a single person to do 125 fake signups with bots?
Because :
1) You're looking for fake signups and bots are really good for that!
2) Instead of paying 0.00001 you can pay 0.00125 directly to a single person.
0.0001 is the standard tx fee and anyone who works for you has to make 10 fake signups just to cover the tx fee? Just think of it.. Even you know you're paying very less
Edit: Sorry i just read the OP and the 1st page of the thread.. OP stated that he'd pay 0,004 or 0,005 per signup but its still unclear if he meant $0.005 or
BTC0.005