Most listings are in the $10's per square foot per year. The Moncks Corner submarket is going through a an increase in rates. In the last 3 months, the median rate rose $20 per sqft per year.
In the last 90 days, 1 listings have been listed, which means new listings are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. About 200% of the listings in the Moncks Corner are subleases, so you might be able to find a shorter term or below market rent. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,930 sqft. Most properties in this area are around 1 floors. Most buildings in this market were built in 1998 and are Class B.