Creating PDF from Forms

What is the best way to push data input in a form to a PDF? I have read a few different posts about using Blockspring’s HTML to PDF (cheaper option @ $10/month) and SelectPDF ($500-$1500). I am curious if anyone is using anything different for their workflow for entering in a form to generating a PDF with zapier or something similar?

The use case is creating proposals, invoices and the like from data entered into the app.

Hi, the question is a bit old, but I had the same problem, and decided to create an API and plugin to solve it : [Plugin Announcement]: Easiest and cheapest PDF creation in workflows (docx to PDF)
Basically it enables to create pdf with Bubble dynamc data using a docx template.