Do you mean that by using this method, you can obtain a phone number for any country for free, without restrictions on the number of numbers and the ability to reuse them? Or what?
Generally, instead of selling the method, why not sell the numbers for half a dollar and within a short period of time you will list the 15 dollars that you hope to get.
Finally, is this method legal? Are there restrictions for its use and what is the nature of those numbers.
the number can reuse it as long as you have it active, if you deactivate it you will lose it, paying a membership you can reuse it again, they are 100% legal numbers. where I get the numbers they give certain amount of dollars ($15) to use for free credits and with that credits you can pay each number in $1 each one that is to say they are free numbers, you can recreate more accounts to obtain more credits, it is simple, everything for free you can do, each number costs $1 or more money depending on the country you request the number, there are numbers, new, used, voip, non-voip, by sms and calls many options and configuration to test
And of course I also sell numbers by other means is not the same to get $2 selling 1 number than selling the method in $25 the same day, not every day I sell 25 numbers, so is different.
I hope I have been clear