You can look at the OEM versions of popular software (AutoCAD is available, the version is usually about 1/2 cycle behind what you can buy from AutoDesk). They come with zero support, they are only downloadable (no CD or manual), you have to buy a copy for each user, but they are really cheep. If you Google "OEM Software", you'll find quite a few sites selling it (AutoCAD 2008 for $159 is pretty common), some sites say that it violates license agreements, and some sites say that it doesn't violate the agreements. It is for you and your lawyer to decide if paying 10% of the retail price is an acceptable deal for your company.
I'm not sure how many seats you have (since $12k times any integer is not $66k) but it doesn't look like you're talking about more than 3. I think the last
David