As promised according to CNNmoney.com here are more items and services that have an enormous markup.
4) Name-brand pain killers: Is it worth paying more for a pain killer that is in a bottle that you saw on TV, or are you willing to save money by buying generic? A name brand bottle of ibuprofen can cost aprox $8.49 and the same dosage and count of generic (store brand) ibuprofen can cost aprox $5.29, that is a 60% markup. Is generics safe? FDA mandates that generics have to be just as safe as name brand.
5) Wine at a restaurant: Enjoying a bottle of wine at a restaurant can cost you about 6 times as much as it would to enjoy at home. Restaurants typically mark up a bottle 500%. Cheaper wines are sold at three times their regular retail price and expensive wines marked up two times as much. Maybe staying home isn't that bad of an idea.
6) College textbooks: Something you normally wouldn't consider until you are standing in the campus bookstore. College kids are forced to buy books for their classes spending on average $900 a year, and many people don't agree with the prices. Single text books can cost anywhere from $20 to over $200 and usually are considered outdated within a year or two. Unfortunately the resale value on text books is almost nothing.
Unfortunately we are at the mercy of these retailers for the pricing on what we want and need.