Here's how to buy Tom's stuff securely with your credit or debit card using PayPal
Just scroll down and click the "Add to Cart" button next to the items you'd like.  Your PayPal shopping cart will open in a new window.  Click the "Continue Shopping" button to come back to this page.  (NOTE: Each time you click the "Add to Cart" button, the quantity of that item goes up by one even if the shopping cart does not pop up again.)  When you've finished picking each item you'd like to buy, click the "View Cart" button at the bottom of this page to go back to the shopping cart.  When you're ready and feel really good about the purchase you're about to make, click the "Secure Checkout" button and follow the steps.