With all due respect [none] for your [fool's] budget, if you currently make drawing sets using Plotmaker, the extra for having Archicad 10's publishing/viewset things will save SO MANY billable hours in the first month, you'll be way ahead.
Trust me on this single improvement, even if you feel the other [fantastic] Version 10 enhancements aren't justified.
Others might chime in.
Dwight Atkinson