I've repeatedly bought from megatoners and referred others. The worst batch had three DOD carts in it. The prices are so low you don't worry much about it. Seriously. $2.50 per cart is not uncommon. The batch with three bad ones was unusual. I've had batches with 0 duds. They switch providers constantly so it's a bit potluck, but the money I've saved could buy a dozen printers and these carts have yet to kill one. (unless you think ink can burn out the motherboard. I do not.)