Well, a 1k light with a decent bulb puts out around 150,000 lumens of nice plane-useable light. Divide 150,000 by however many lumens those LEDs put out, which is 200 lumens (for $60). So to equal one 1k light would take 750 of those $60 lights, or $45,000. And it still wouldn't be as efficient unless its spectrum were as good as a Hortilux or something on the 1k light. You could probably get by on a third of those lumens, but still, that's $15,000, and 250 LED bulbs. Heh.