This all by memory, but I did the account suspension thing a year ago when I moved. I thought it was $5/mo for me, but I started in 11/05. The longest one can suspend their account is 6 months. I remember this cause I did mine from late Nov 2005 to early May 2006, so I was barely in the six month window. Fortunately our house was built on schedule.
When you come back, you keep the same programming deal you had before, or you can change it to whatever is currently being offered. If moving to another DMA, some mandatory changes may happen, such as: local stations, regional sport channel, or hard porn channels (some states/areas have laws against broadcasting porn).
If you are in the middle of a contract period, I do not know how/if suspension affects this (i.e. 6 mo. suspension counts towards my 2-year committment). I was not in a contract when I started the whole moving process.