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The Dremel 9100-21 Forti-Flex 2.5 Amp Stationary Flex Shaft Tool is $ 139.52 at Amazon right now. Free shipping with Prime.
This price keeps dropping a small amount every day, and could possibly go as low as $ 119 like it was a month ago. Check out the graph for this tool on CamelCamelCamel, and wait as long as you dare for the price to keep going down.