I currently use a product, jotfrom, to create forms that need a payment with Paypal. I would like to use Skuid. Here is how I build it in jotform.
https://drive.google.com/file/d/1aOOymKvlmfrRmpBgMNOy87KQ0YRlGfye/view
Here is what the finished product looks like
https://form.jotform.com/81755030975259