1. You need to use the purchased CC (pay for purchases online) in the same way as you use your own CC.
Everything is very simple - enter the received card data
(do not copy and paste) into the data entry fields and click "Pay".
2. Verified stores and sellers selling CC are in this section:
Sell CC
3. You can check CC survivability with this simple method:
Check CC for Valid
Or check it with the checker built into the CC store.
Please ask questions for better understanding.