Most desktop publishing software is expensive. Most of the top products are expensive costing hundreds of dollars. Many cheap desktop publishing titles have come out over the years with little to no support. When new operating systems come out, they aren't updated so the software becomes obsolete. 

Lemkesoft.de has been producing and supporting new versions of their desktop publishing program, iCalamus2, since the late 80's. They have a free trial version and the full registered version is only $59.99 online. You can even e-mail Thorsten yourself for support!