I have used this bag for about one and a half years, and it works really good. For the money, I just don’t think there is another 0 degree bag that can compress as small, or is as light. Its not perfect though, and the zippers stick to the nylon lining a bit. However its always something I can get out with a little effort. Its rather durable, and has lasted a few seasons, which is more than you can ask from a $30 sleeping bag.
My recommendation is, that if you are on a budget and looking for a 0 degree bag, then just go buy it. If your not on a budget, and you can spend $200+ then there are better bags out there.
If you are interested in purchasing this, check it out on the big 5 website below. I cannot promise that the price will be only $30 forever. If you click the link below, and the price has changed, please tell me so I can update the link to a better price. Thanks!