I agree with other posts that getting one for $200 will be difficult.
Found a Mountain Hardwear Phantom 15 degree bag in like-new condition off of Ebay for $175 for my wife. Not zero, but still a high value bag for a good price.
But, some 12 years ago, I bought a Feathered Friends Lark, which I ordered overfilled to achieve about 0 degrees. It weighs 47 oz. in the stuff sack. Now such a bag will cost you over $400. But, I will say that purchase has proven, for me, to be one of the best that I have ever made in my life. Today, it still has about the same amount of loft as new and still is a great bag after all the years.