His work is good because he's a talented digital artist. If you bought the $200 video and practiced his techniques, could you be as good? Maybe, if you already had that "talented digital artist" gene. Learning good retouching techniques will make you better at retouching ... or faster at retouching, but if you don't have that "talented digital artist" gene, you'll never be as good as him.
Here are some of my interactive retouching samples. As you can see ... I'm still trying to find a good pair of retouching "genes"
http://www.martysphotography.com/retouching2/