Looking at the Exede Business Plans,
I am currently on the Liberty 18 Plan for $110/mon (including lease fee) and I see the Business 20 Plan for $100/mon.
You also get a static IP with the Business Plan.
What is the downside of getting 2GB/mon more of data for $10/mon less?
The only thing I see is that if you go through your data cap you will be billed automatically for the extra usage, just like some cell phone companies do.