well how much is your companies subscription and upgrade costs i would ask?
have you used Intellicad? there is no learning curve all the commands are the same, it truly is a clone and can be free:
http://www.softsea.com/download/ProgeCAD-LT-2006.html
Our subscription cost is the same as everyone else. $800/seat/year or whatever the price is. We have 6 seats. That subscription cost is infinitely recovered by the support offered by the company we pay for, being a user of a program that boasts millions of users to which there are common discussion pools for which I would draw information, and nearly-universal acceptance from any company we work with, as well as the program being taught by most colleges/tech schools/universities from which would would possibly draw applicant drafters. The very affordable subscription cost also comes with the support of our very knowledgeable reseller who continually offers training classes, seminars, demos, tech support, all of which is free, or has a menial cost (like chipping in a couple bucks for lunch for training classes)
But I think I already covered the fact that we use this software and it makes us quite a lot of money while we use it. Then again, the overhead that this software incurs is not really where the dollars are. We charge what we charge, not because we use "expensive" software... we charge what we do to cover liability, insurance, employee wage/benefits, profit margin, training, office material overhead, and all that jazz. When it comes down to it... software is a small boat in a designing engineering firm, and to cause waves over such a dinghy thing, when we have tankers to worry about... is ludicrous.