First of all, carders need a card number and authentication data (bank account password, VDV for cards with 3D Secure, CVV2/CVC2, etc.). Often, carders buy a database and check the relevance of the information in it, or select passwords using brute force or other methods. In the carder CC shop, you can buy these cards for 300-500 rubles . In addition, carders pay for a VPN with the ability to choose a server (preferably accurate to the state or at least to the country) and other means of anonymization.