software is costly
Remember that new Macs come with lots of great software: iLife apps, iCal, iChat, iSync... my TiBook even had Graphic Converter for photo editing... heck you can use TextEdit for basic word processing. Being a student, I was fortunate to get ed discounts on the following that I needed for school: Office Vx, EndNote, SPSS, Keynote, GoLive. Each time I wanted to use Fireworks, I downloaded the 30 day trial version (hehe)...
The good news for PC to Mac switchers is that both platforms use (for the most part) USB and Firewire for I/O, so your printer and most of the other peripherals should have drivers to work on both. Gone are the days of parallel/serial/ADB/SCSI switching issues.