Hey there,
I believe I can help you on this task. Price and the deadline is totally discussable between us, and depending on the necessities of the task. But first, let me give you a brief info about prepaid cards for you;
* Prepaid subscriptions (phone numbers) are generally approved and being ready 24 hours after application.
*There are 3 main carriers which I can buy a prepaid mobile subscription. (Turkcell, Vodafone, and Turk Telekom)
* Mobile carriers are generally charge you an amount while buying. Then some of that charge will be defined as a prepaid balance. You can check that information from these sources. (If you need these to be translated, I can help you for free.)
(Information website links are deleted by admin, I can send them later)
If you can message me, we can discuss other details I believe. Looking forward to hear back from you, have a great day :)