Do you have any spare hard drives, or flash drives that are big enough to hold a Mac OS X installation, or do you own any other Macs?
Because my number one way to run DiskWarrior is not to boot from the CD (which takes forever), but to keep copies of it on bootable backup drives, bootable utility drives, and other Macs, then I take the Mac I want to run DiskWarrior on and boot it from one of those other 3 things. Then I am never dependent on whether the CD can be booted from on a particular system.
I have two Macs, so if I want to run DiskWarrior on either, I restart the Mac I wanted to examine (Mac #1), boot it into Firewire Target Disk Mode, mount it as a hard drive on Mac #2, and run DiskWarrior from Mac #2 on Mac #1.
The cheapest solution may be to take any spare hard drive you own, install OS X and DiskWarrior on it, and make it a bootable utilities hard drive. It can be a very old drive because it doesn't need to be any bigger than necessary to install OS X and a few utilities.
By the way, part of the reason we pay for those bootable CD updates is because us normal users can't squeeze down regular OS X to fit on a CD. Alsoft has to get a special license from Apple for an approved slimmed-down OS X that can fit on a CD and boot it. And of course that's going to need to be customized for each wave of new Macs.