We use Paypal as a payment gateway. The big advantage is that it is a secure system which protects both parties in a transaction.
We never ever see or handle your credit card or debit card details. We are only told when a cleared payment has been made to us.
This is much more secure than using websites who take direct credit card payments. On those sites, your data could be sent anywhere, and you have no control over it.
By using Paypal we eliminate the possibility that your data could in any way be compromised by our web site.