Yup, check out the articles. If you're keeping just fish, you should be fine with whatever light you want to invest in. But if you're looking to keep corals or anemones, you aren't going to find a light fixture that fits your tank for $200. Just ain't gonna happen. There are some less expensive fixtures, depending on your tank's dimensions. The Marineland reef-ready LEDs are decent, and for a 48"-60" fixture (they're extendable, but you still only get 48" worth of lights) you're looking at $350 or so plus shipping. Aquatraders also has a T5/metal halide fixture for about the same price. But that's about the cheapest you'll find for lights capable of sustaining corals and nems.