I already had a spare toner cartridge for my Brother device. Soon after buying the printer, I noticed that it had shipped with toner marked as 'sample-sized' only. I may have purchased the replacement via Amazon last summer when I noticed how reasonably priced they were.
Let's see, how long have I had this combo scanner/printer? If I didn't regularly blog, I'd forget half the stuff of my life. Okay, a quick search showed I've been using the same trial cartridge for almost two years! Now my printing needs should be set for the indeterminate, foreseeable future.