Best low-cost option
Oster is a well known small-appliance company owned by Sunbeam. They offer a large selection of kitchen products, including several juicer models. The majority of these are centrifugal juicers, and all of them retail for under $100, which is considered relatively cheap.
User opinions are pretty consistent when it comes to Oster juicers. Their affordable prices earn them very high value scores. They also rank relatively high for performance, beating giants like Breville and Krups. However, you shouldn't expect stellar quality - owners report that while these units perform well, they tend to fail or break after a few years of use.
In short, users recommend Oster for casual consumers who don't want to spend big bucks on a juicer. If all you want is the occasional OJ, Oster is a great option for you.