This allows is to fit flush between the cartridge and HP inkjet printer, intercepting traffic and presumably telling the printer some sweet lies so that you can go on with that print job rather ...

For example, a single HP 934 black toner cartridge ... which is about the norm for most cheap inkjet printers. As always, the bigger cartridges give you more ink and so the cost-per-page here ...

Inkjet printers are cheap to buy, but expensive to run. Replacement cartridges can easily cost double the price of the hardware itself, leading many to decry the technology entirely. However ...

Durability is an issue with cheap printers, but ink costs will be your immediate concern. That generally has to do with the yield of the cartridge. A standard cartridge might have a CPP of seven ...

Another solid option for a tank-based printer is this HP Smart Tank ... to deal with cartridges. Reservoir or Tank printers like the Epson EcoTank ET-2800 have a reservoir of ink in various ...

Opinions expressed by Forbes Contributors are their own. I write about how to do more with your consumer gadgets. Sure, you can get a class supply of tablets or have students do work on laptops ...