@chombor : For PC version, It should cost about $2,500 in my country. I’m not really sure how much you should charge in yours :p.
@rabellogp: Thank you, I’ve been a fan of your work. For this project we just install it directly to the devices for customer so we don’t have the apk file yet :p. Do you use facebook or skype? I would love to add you if you don’t mind :D.