You have a point. And your pick is a good one, because it illustrates my point well. For most subjects, it is not just one book ( it will likely be several depending on how far you want to push it ), and I rarely see those falling below $100 range at this point. Heavens help you if you are looking for a specific edition. And the collection quickly adds up; wife is already making cracks about how we always need more books.

But yeah, thankfully on that front I am not at the experiment stage yet:D I think I need more money for that.. so far.. just a whole lot of books.