Payment Options

Credit Card

We accept Visa, Mastercard, Discover and American Express credit cards.

PayPal

You can pay online using your PayPal account. Select 'PayPal' during checkout and enter your email address, and you will be taken to PayPal's payment gateway to finalize your order.

Check or Purchase Order

We accept purchase orders from US federal, state, and municipal organizations, as well as accredited academic institutions. Select the 'Check or Purchase Order' option during checkout, and you will receive information on how to pay. We will ship your order after we receive and process your purchase order.

To view the invoice for your order, log in to your account, select 'Order Status', and select 'View' for the appropriate order.