How to Increase Page Limit for Signing Adobe

Hi There,

We are looking for a method to increase the page transaction limit. We have Adobe acrobat pro for our small office and would like the 500 page limit. How can we go about getting this? 

The resouce I found says that https://helpx.adobe.com/ca/sign/using/transaction-limits.html

I would need to get enterprise but then their is a 150 transaction limit.

Thank you!

Sarah