We use PayPal account for online payment. Please note there is a 3% convenience fee for this service. If you do not have a PayPal account and wish to use your own credit card, you can choose that option at the checkout. If you are making more than one payment in one session, please click “continue shopping” to come back to vasmd.com. Sometimes it requires temporarily to close the PayPal cart page but it generally stores your preceding transaction/s.