Amazon has StableMate PLUS100 Universal Miter Saw Stand for $155.81 + free shipping.
From the Manufacturer
Get top performance in your shop or off-site with the StableMateplus universal, portable miter saw stand. Offering steady and secure support for all miter saws, the PLUS100 is fully portable and features a wide A-frame stance for incomparable stability; patented universal mounting clamps for easy on/off access; quick, positive lock work support adjustment to control correct stock alignment; flip-up stop for consistent repetitive cuts; left and right extension arms with positive-lock length adjustment from 46-inches to 114-inches for longer stock; carry handle and folding legs for easy transport and storage capabilities; non-sliding rubber-feet for solid-footage; and comfortable 36-inches work height. One year limited warranty. Kit includes stand with left and right extensions, a pair of tool mounting clamps; two work supports, one flip-stop and instruction manual.
Product Description
Universal Miter Saw Stand, Extends To 114", Includes 2 Mounting Clamps & 2 Adjustable Work Supports, 1 Flip Stop Carry Handle For Easy Transport, Non-Sliding Rubber Feet For Solid Footage.
StableMate PLUS100 Universal Miter Saw Stand $155.81 FS 
