I went on to Quikship and found the Brother toner I normally pay over $100 for for under $20. It's either a re-filled cartridge or a similar product but cannot be genuine. The last time I tried knock-off toner it nearly destroyed my printer. When I called Brother support they asked me if I was using a genuine product and I had to confess I wasn't. I simply cannot have a printer out of commission and the 'similar' cartridge didn't work so overall, a waste for me. I shop Office Max and Staples, whichever store offers the best price I will buy from. If one is closer but has a higher price, I will print out the ad and take it in to the store for a price match. That's the only way to save money on toner, besides printing the borrower's copy on 'save toner'. I also noticed that for Brother printers that save toner still prints decently even for the lender's copy. So after a year of only printing one set 'save toner' I now print both. I still go through one cassette of toner per 10 box ream of paper.