Resolume Arena is one of the best and well known VJ software tools out there, but it has always been stupid expensive.
This is their once a year 50% off sale. If you apply for an education discount, you can get it 50% off again (so 75% off full retail price).
I've been using it for years non-legit and it's finally at a price I can actually justify.
All the other software offered by them is 50% off as well.
Resolume Avenue is a cut down version of Arena (doesn't do Projection Mapping/Warping)
Resolume Wire is for modular node-based video effect patching.
It's charged in Euros and I just used the normal exchange rate - the Education pricing for Arena was €199.50 EUR and came out to $346.98 AUD paid via Paypal (sorry wasn't sure what pricing to use in the title!)