Review on 🖨️ Cool Toner - Compatible Toner Cartridge Replacement for HP 78A CE278A - Laserjet 1536dnf MFP, P1606dn, M1536dnf, P1566, P1560 - Printer Ink (Black, 4-Pack) by James Prizgint

I have been buying from this company for over 4 years. In all that time (about 4 orders a year) I've only had one batch which, like the others, turned out to be short-lived. Otherwise they last as long as standard toner and cost about 1/4 less. It's worth the price even if you occasionally get toner that isn't filled properly (like I said 4 packs out of about 16 for pack orders in the last 4 years). Even a pack that didn't last as long lasted as long as I expected for the price, so overall I can't recommend this company enough.