Toner cartridges can be expensive, sometimes exceeding the cost of cheaper laser printers. As a result some people dispose of the printer when it is out of toner (thereby negating any "green" or "eco friendly" claims made by the manufactures) and replace the entire machine. Ironically, new machines generally come with toners that are only ⅓ full. Consumers also can opt to buy generic brand laser toners, manufactured by companies other than the printer manufacturer. These toners are widely available at a fraction of the price of the genuine brand replacement. Toner refill kits are also an option, allowing the consumer to simply refill an empty cartridge.