Moses's printer goes through toner cartridges about every two months or so. If I buy it new, the cartridge costs about $80 at Office Depot. I've been experimenting with online stores and have found one that seems pretty good. Lately I've been ordering from SuperMediaStore.com, where I can get a refurbished cartridge for about $25. Today, I saw that they had a 3-pack of his cartridges for about $60. Additionally, I went to CouponCabin.com and found a promo code for this item, and saved 20%. I ended up paying $50.36 for three cartridges, which is $16.79 per cartridge. I saved almost $190 over Office Depot! Happy birthday to me!