The nice thing about using paypal buttons is that you
don't need a database. Databases are great for big online stores, but for a smaller independent business-person you can use paypal's button-based ordering system and avoid the problems that go along with maintaining a database. All of the ordering information about your product is contained in the code for the button.
Read this first
From Paypal's website:
Buy Now Button
Buy Now buttons are used to sell individual items on a website. You can create the button code yourself or use a tool on the PayPal website where you can generate custom Buy Now button code.
To create a Buy Now button on the PayPal website:- Log in to your Business or Premier account.
- Click the Merchant Services tab.
- Under PayPal Website Payments Standard, Key Features, click Buy Now Buttons.
How many products are you selling?
I hope that helps. Feel free to pm me.