As the CMS marketplace matures, software prices keep dropping. Major vendors continue to experiment with ways to profitably reach the small-to-midsized business (SMB) customer who has become a fairly active content management buyer. FatWire has elected to make its Content Server product available at a lower cost exclusively through resellers focused on the SMB marketplace. "CS Express" only supports one website/URL, but is otherwise fully functional. Resellers presumably gain integration contracts (FatWire is not a simple tool). Other vendors, such as Vignette, Interwoven, and Microsoft have tried variously to court the mid-market, generally without much success. If you're on a budget, you might want to check out FatWire's CS Express option, but remember that the lion's share of your expenses will come with implementation services, so don't overbuy on the complexity side...
Visit FatWire