There is a TON of money in Salesforce. I'm rolling it out at our company right now and it's mind-boggling how many associated costs there are when you want the Salesforce connector for your existing tools:
* Data enrichment service plugging into Salesforce? Extra $10-20K/annually
* NPS service piping responses in? Upgrade for an extra $8K
* Preloading account data? There are like 5-10 sources you can have, each one with a different purpose, each one a potential $25K/annually
* How about a note-taking app that lets you modify Salesforce fields in the app? Another $40/user/month
* Hiring a consultant? $150-200/hr, and it'll take 100 hours to get it done
All that's on top of the $150/user/month Salesforce Enterprise list price