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D&Dshop via Amazon has their 2.4G Wireless Mouse, Nano Receiver, 6 Buttons, 1600 DPI 3 Adjustment Levels on sale for $ 6.99. Shipping is free with Prime or orders over $ 49.
2.4G Wireless Mouse, Nano Receiver, 6 Buttons, 1600 DPI 3 Adjustment Levels $6.99 @ Amazon