Payza payment processor, old name AlertPay, used to be a very good alternative payment option at PTC sites. Almost every PTC had to have Paypal and Alertpay.
But later fees became higher for "risk business", PTC is one of those, and there were a lot of problems with withdraws. People couldn't receive their money from Payza and support was bad.
Now the sales via Payza decreased a lot and it's no longer a great alternative unless the PTC you run/use is huge, that's where Payza can still be used by many people. But most of the income, a good 90-98%, comes from paypal and other payment services.