I recently picked up the Wisdom Well at Barnes & Nobles on sale too. Mine was like $4.00...it was marked the same as yours but when I took it up to the register they had another sale going on top of that..couldn't beat the price.
I've only tried a few readings with it but I really liked it. And I agree, it can go much deeper than those booklet meanings. Learning all the archetypes would take it very deep. I liked what I've seen so far!