SkyNeck relies on PayPal as the payment platform to process purchase transactions.
PayPal claims on its website:

With our 179 million active customer accounts, we have created an open and secure payments ecosystem that people and businesses choose to securely transact with each other online, in stores and on mobile devices. PayPal is a truly global payments platform that is available to people in more than 200 markets, allowing customers to get paid in more than 100 currencies, withdraw funds to their bank accounts in 57 currencies and hold balances in their PayPal accounts in 26 currencies.

SkyNeck offers the convenience of making payments by debit cards, by credit cards, and by PayPal online. We accept Visa, MasterCard, Discover, and American Express. We also accept payments over the phone, fax and mail. SkyNeck as well provides an online invoicing. Customers can pay securely with the click of a button, even without a PayPal account. We accept payments in 26 currencies from 203 countries.

SkyNeck also offers a PayPal Express Checkout to enable customers to check out in a few easy steps. A PayPal button is added to payment solutions to provide customers a faster, safer way to pay. Essentially, in a few easy steps, customers can speed thorough checkout using their PayPal account, whether it is their PayPal balance, bank account, credit card or Visa Debit card.

We strongly believe PayPal offers not only high security and great flexibility but also enormous convenience in placing online transactions.

Lastly, SkyNeck also accepts Wire Transfer and Money Order Payments.