Serif do some very attractively priced software and their DTP offering has some quite remarkable features. It can do most tricks that you might like a DTP package to do and is easy to use, but obviously it is a far cry from InDesign or Quark.
click here to visit their site and look for the PagePlus product.
You can get older version of Serif software either free for download or on magazine cover CDs.
After that, you start looking to some of the bigger brothers in DTP which all command a price penalty.
I seem to remember a product called Greestreet Publisher which was (a couple of years ago) remarkably powerful and quite inexpensive, but I've not seen it now for some time and have no idea if it is still available.