Hi Kevin,
They are pricey and I cannot say if they are worth the cost for you, however. the VHS tapes taught me to engrave. Living in Alaska gave me few options to learn so I had to teach myself. I had Meek's book, which is very useful as a reference for art but useless as a teaching guide. McKenzie's videos started the ball for me and showed me how to sharpen the tools, make cuts, draw designs, etc. It was also a pleasure just to watch him engrave with hammer and chisel.
dave