Simple order form to send to Paypal (free account)

I feel silly for posting this, but here I am. I work for a very small non-profit and cannot remember how to code a simple order form that will send the purchase amounts to a free Paypal account. We are just trying to sell a few tickets to a small holiday fundraiser. It's a simple as "How many Adults and How many Children would you like to purchase tickets for?" $15 for a Adult, $10 for a child. However, I really don't want to give out the email address associated with the Paypal account, so maybe if you could make that part a variable and you could just show me where in the code to put that in? I figure someone could whip this up in 10 minutes, really.