How much dose a ds light cost?

Answer 1

Because you get to pay for the convenience for not having to measure out the dosage yourself. Its the same reason people pay so much for coffee each morning. It doesn't take that long to brew a pot but people will pay more to get less. You can go through the trouble of getting a set of mg scales and a mortar and pestle and crush aspirin and reweigh it for the proper dosage. I remember my parents had a cigarette rolling machine that made cigarettes at a cost of one cent per cigarette. At the time, You could buy them already rolled at twice that price.