It really depends what you want to use it for. I have a chopper type appliance, similar to what I linked below except with high and low speeds, and it cost me $20 at Walmart. It works well for what I use it for (making sauces, etc.).

http://www.amazon.com/Black-Decker-HC306-One-Touch-Electric/dp/B000I0DV6W/ref=sr_1_1?ie=UTF8&qid=1357444574&sr=8-1&keywords=black+and+decker+mini+chopper