Spelling things out too clearly is a doing a disservice to potential purchasers imo. Some of this stuff should be left to the purchaser to figure out, ie. calculating cpm. If one is unable to figure it out, then they shouldn't be taking part in the promotion.

Every time a "good" deal comes up, people don't do enough research, resulting in an explosion of complaints about how restrictive the program is, how CS is useless, or rants about how the long-known quirks of the program are ridiculous.