Because technology has enabled us to so quickly and easily learn about new topics simply by watching a few videos on, people tend to think they are experts on everything from cooking to music. Watching information on toner Refilling on Youtube has given every weekend warrior and fervent do-it-yourself the license to crack open their dried up cartridges without so much as a second thought. This may save users some money in the short-run, but in the long-run it can damage your printer and cost you more.
Every printer is a bit different from the next and toner and ink cartridges have so many specifications that the smallest miscalculation can make a model incompatible with a printer. Manufacturers warn of using third-party products instead of their own because of the problem, though this is more of a case of trying to corner the market for their own benefit.
Depending on how much time you are willing to invest in actual research and shopping beyond 30 second videos, you may have the ability to save hundreds of dollars a year on toner costs. Independent retailers are creating a highly competitive market place where the consumer actually does have real buying power.
Printing guides are a good waypoint for finding a reliable machine and sites like Amazon are useful for reading customer reviews. There is no reason to spend more than $10 or $20 dollars for a cartridge refill, whether it be using a service, doing it yourself or buying an environmentally friendly substitute for your current one.