Who knows the cheapest network that sells installs where user has to install and open the app? I am looking for something <10 cents per install.
Thanks
Thats now bad way to advert and boost your ranking in google play. Now uninstall rates can cause ban of your play account. Mostly people are deleting app after opening it, because downloaded for some value in different application like gold, points, gems, free access, etc.
If you want to try:
yeahmobi - cheap cpi network, you can set from 0.05 to unlimited for install 
ayet studios does not track opens…
ayet studios should have allowed tracking url
yes they should have…