Adobe ColdFusion 8 for Education is free
I've just posted a comment over on Simon Whatley's blog which made me think some people still might not know that ColdFusion is free for education and this includes all qualified students, faculty and staff of eligible education institutions.
You can find out more at freeriatools.adobe.com/coldfusion/ though you will have to prove you eligibility with some form of ID.
Also don't forget that Adobe offer Flex Builder under the same conditions as well.
For example, I can't load CF onto our web server and have my students create applications for their clubs or organizations. I also cannot have them develop applications for my department (without the purchase of another server).
They could have taken the idea fuerther and made it awesome, but they just stuck with 'good'.