I was a little worried it wouldn't last as long and work as well as the OEM toner but I've had a 2 pack for 6 months and they has opened all good. These two 30A cartridges last as long as an OEM 30X cartridge, at least for our needs. We usually print large text proposals and work orders, but very few images. These cartridges work normally, do not fail, do not jam. And they're about 37% cheaper than a single OEM 30X cartridge. The only downside is you have to change them twice as often as 30 times, but for savings of over 60% that's not a problem! Recommended.