Jack Tworkov

We accept VISA, MC, American Express, Discover, Paypal & checks and money orders in US $ only. Due to our credit card company's security regulations, please provide the billing address of your card if it is different from the address we are shipping to. Without it, we cannot authorize your purchase. We generally ship by U.S. Postal Service. For international customers, if global priority mail is available, we will not ship surface mail. We are happy to use other carriers or provide other priority services for an additional charge. We will email the charges to you for your approval. Vermont residents please add 5% sales tax, or provide resale number. All books are offered subject to prior sale. If we do not receive payment with your order (e.g. if you are sending a check or money order), we will hold the book for 1 week from the date of your email confirming that your check has been sent before allowing other customers to purchase it. If you need more time, please email us. If you are not purchasing the book, we would appreciate your letting us know immediately. For further information about our books, please contact us between 10AM and 10PM Eastern time.