From the introduction to Book 1:
Welcome to the first book in the Loot 4 Less line, where we deal exclusively in items with a cost-to-consumer of 2,500 GP or less. That’s right: no epic artifacts, rods of eleventy parts or even typical moderate magic items here. This is a forum for the cheapest of the cheap, and that's it. And just to up the level of difficulty, we also don't deal in one-shot (or even two- or three-shot) magic items. No scrolls, potions, talismans or fire-and-forget tattoo magics here. Everything in these pages is a legitimate permanent magic item, free of charges and able to be used in adventure after adventure.