Free if you live in LA and want to pick them up at DD, ro arrange to make it ubber easy for me to ship them to you. I have 2 sets of 3 DVD's Fundamentals, Particle Integration, and Pyrotechnics (that I made years ago but still hold up for the most part) I also have a RigidBody Simulations for Visual Effects from the Kolektiv from 2002, that also has some neat tricks and worth a watch, hah considering those RBD's are still there in maya! Email me if you want them. Thats sort of a trick, whats my email? Not too hard to figure out, or you can find it for sure. Find it, guess it, email me and ask for them, (or linkedin message me) I'll update this post when they're gone.