The Roundabout Way to Save Money on Toner

This is pretty wasteful, but it works.  Don't buy toner.  Buy a new printer.

For laserjets, at Office Depot or Staples, you can get a small, desktop laserjet for $50 or less.  The cost for a toner cartridge?  $70 and up.  (You can purchase non-OEM cartridges, but this is something of a gamble).

For inkjets, many printers use the same type of cartridge.  Keep your really nice photo printer and buy the cheaper printer when it goes on sale (many times these can be had for $35 to $50, usually less than the cost of toner replacement).  (If you're printing photos, you really need the OEM toner.  The non-OEM toners just don't come close to the quality you may desire.) Then you can take out the toner and donate the old (new?) printer.

Always at least donate your old printers.  That would be too wasteful just throwing them away.