When checking out, you will have the option to print your order form and mail it with a check or to check out using a credit card through PayPal.  NOTE: You do not need to be a member of PayPal to check out using that method, just choose the link below the login screen for PayPal that reads -- "Don't have a PayPal account?" -- and then use the form to "Pay with a debit or credit card" to check out as a guest. 

Note: The Used Books are cross-referenced on other sites and may be previously purchased. If a book is not available a refund will be issued.