XS has four major funding methods which include;
1) Bank transfer: min deposit of 300 USD and processing within 1-7 days.
2) Visa/Mastercard: min deposit of 20 and Max deposit of 25000 USD which is processed instant.
3) Skrill and Neteller with min deposit of 15 and max of 15000 and payment is instant.
I prefer the visa/master card but with larger deposits, I'd have to use the bank transfer.