Vendors of electronic compomponents
Chinese based, Deal Extreme offers a variety of products - some not necessarily having to do with robotics. However, they do have a fairly broad assortment of electronic components and MCU breakout boards. The prices are very low and the quality is average. The usually offer lower priced versions of name brand components. The trade off with this company is that products ship from China or Korea and can take up to 3 weeks to arrive.