limit number of products

how can I limit the number of products available for sale so I don't oversell?

You can limit the number available by setting up your products using inventory widgets:

https://widgets.jotform.com/widget/inventory

The following guide has specific information on how to set up payment forms using stock limits under the "Implementing stock limit option" section:

https://www.jotform.com/help/323-Mastering-Payment-Form-Integrations-with-JotForm

If you have any trouble along the way, let us know and we will be happy to help.