Hello Alex!
Probably your best bet would be to go on ebay.
What do you like about the tapes? If you want trance tapes, Richard Bandler has a program called Neurosonics which I find better than attitude activator which is great by the way!
If you want to know more about NLP, then you can check audio and video tapes by Richard Bandler or Tom Vizzini or Mckenna-Breen if you don't mind the british accent!
I have products from them all and they are the next best thing to live training.