Just think - 900 email accounts, 500 FTP accounts, 75 MySQL databases and 500 GBytes of disk space for practically nothing per month.
Yes, you can do this.
But here are a few questions:
- Do you really need all that stuff?
- Do you know what all that stuff IS?
- What's their support like?
- What's the pain of the change?
Changing hosting doesn't change your need for maintaining your website, maintaining your programming, keeping your SEO up to date or managing your store.
Who's going to do that? Certainly NOT your new hosting company.
So, if you're considering this, think twice. Consider the intangibles. You may not be saving as much as you think you are.