On average, listings lease in the $20's per square foot per year. The Travelers Rest region is going through a a boost in rates. In the last 3 months, the median rate increased $22 per sqft per year.
In the last 90 days, 2 listings have been posted online, which means leases most likley are going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 5,400 sqft, there are still 0 new availabilities below 2,000 sqft.