Kitchenaid Mixer Price

I'll buy a KitchenAid mixer for my mother for Christmas. I saw an advertisement for appliances DirectBuy. But I, ve got a problem I can see what is the price. If this can save me much money, I might be ready to buy a membership. Can anyone tell me what the prices for KitchenAid mixers are. Preferably, the 5 liter sizes.

After a colleague tried to make me join DB, being the skeptic that I am, I immediately made my own investigation into the "savings club" ... Here is a good place to start, but the Internet is full of many disappointed people.
http://blogs.consumerreports.org/home/2007/09/with-directbu-1.html

Personally, I think it's a scam!