Shop4Tech.com cuts 20% off all ink cartridges via coupon code "Print20". Plus, many items qualify for free shipping. Plus, click "Buy All Now" to take up to $10 off. Combined with free shipping, that's the second best percent-off discounts we've ever seen on printer ink from Shop4tech, although we saw 22% off two weeks ago (since expired). Some best bets, with prices after coupon and free shipping: