Selling tickets at different prices on one form

I have a client that wants to sell tickets with this pricing structure: Ticket cost: $18 teen or child, $36 adult

And they want the purchaser to be able to buy six tickets maximum.

I'm using Authorize.net. What would be the best way to go anout this?

Thanks

You can actually do this in the payment integration itself. You can add products and quantity. Please check this demo form that I created: https://www.jotformpro.com/form/63495845167974. You can clone it if you like.

In the payment wizard, you just need to edit the product and add quantity option on it. You can limit the drop down options to your preferred value. Here's a screen capture:

Here's a guide on how to add options in a product: https://www.jotform.com/help/225-How-to-Add-Options-to-Payment-Forms.

Hope that helps. Thank you.