You do need to have ten items or less, or it won't apply the coupon code and subtract from your total. It seems strange, but they will not permit you to pay for a few items and use the code for others.
Squirt, these are goofy but highly entertaining academic tapes for kids. Think of a clean Saturday Night Live type show, with college students dressing up as explorers, mad scientists, etc. in various skits, while discussing the nuances of microbiology, algebra, hamlet, and Italian, to name a few. My kids have enjoyed them for years, and though they are not enough to stand alone, they make excellent supplements to other coursework.
My kids love the Standard Deviants. We haven't found a bum one yet, and we have watched quite a few, between our small collection and the public library stock we've viewed.
