Creating a PayPal Payment Form
Although it can have some issues, PayPal does provide a very simple way to take payments on a website. And with a little tweaking you can easily turn a PayPal ?Buy Now? button into a form where the user specifies how much they?d like to pay and what they are paying for.
http://www.good-tutorials.com/tutorial/27719/creating-a-paypal-payment-form
