JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You may like to take a look at the following guide which should help you understand the max file size which you can upload in google drive or any other integration: http://www.jotform.com/help/33-Changing-the-Upload-Size-Limit
As far as the cost is concerned, please take a look at our pricing page for different available plans and its submission limit including upload limits: www.jotform.com/pricing/
Hope this answers your query.
Do get back to us if you have any questions.