It was too bad that the New Simple Volume, New Spanned Volume, New Stripped Volume, New Mirrored Volume, New RAID-5 Volume greyed out so that you cannot create new partition with this unallocated space.
The cost to add sewer backup could range from $10 to $250 per year with traditional home insurance policies. Not all insurance policies (or homes) are created equal. Some companies allow you to add sewer backup to your policy, but will limit the amount of coverage to $5,000.
The prudent home buyer will always have the sewer line inspected, regardless of the age of a home. A sewer backup is a potentially nasty and expensive event when you own a home. Sewer line repair can also be extremely expensive, as it requires a lot of excavation and potentially street/sidewalk repairs.