Payments made to us via PayPal for balances, and for orders made through our Online Store, will be assessed a fee of 2.9% on the total amount. This is to cover the cost of the fee that PayPal charges us for each transaction. It will be assessed during the checkout process, and will appear as 'Sales Tax' (PayPal doesn't seem to have another mechanism available for doing this sort of thing).
For this reason we prefer to receive payment via personal check, money order, or bank wire transfer. If you would like to pay for your purchase in the Online Store through one of these non-PayPal methods, please just send us an e-mail and let us know what you would like to order.