Amazon.com, Walmart.com, Overstock.com and Target.com all sell ice cream makers with prices generally upwards of $20, as of 2016. Some of the cheaper brands include Nostalgia and Hamilton Beach.
Cheaper ice cream makers often need a little more effort, and sometimes preparation, before use than a more expensive machine. A wooden bucket with a removable steel bowl is a popular, cheap model. This type of maker needs the addition ice and rock salt to freeze the ice cream. Freezing the metal bowl speeds up the process, but it can take 24 hours to chill the bowl.
Stirring and mixing the ice cream with a paddle help break up ice crystals and give a smooth consistency. Dearer models generally automate or semi-automate this. Budget models rely on the user to turn the paddle by hand, sometimes for 15-20 minutes, until the ice cream is frozen.