The Best Coffee You Can Buy at Trader Joe’s. Part of Trader Joe’s appeal is that you don’t get decision fatigue there. Unlike at a typical grocery store where you can be frozen with indecision at the 57 types of, say, ketchup, shopping’s easy at Trader Joe’s. Best Trader Joe’s Coffee for Cold Brew October 30, 2019 October 15, 2019 by VoltageCoffee Trader Joe’s has exploded in popularity over the past few years, and so has cold brew. That best budget coffee is the Trader Joe’s Kenya AA coffee, which scored a 92 and tied for second but costs just $7.99 for 13 ounces. (In the grocery store, 13 ounces looks like you are being shortchanged 3 ounces but in the speciality coffee world, where 12 ounce bags are the norm, you are getting a free ounce of beans here.)