VicTsing Wireless Ergonomic Vertical Mouse $8.83 at Amazon
Amazon with VicTsingDirect has the VicTsing Wireless Ergonomic Vertical Optical Mouse with 4 Adjustable DPI 1000/1600/2000/2400 Levels (2019 upgraded model) for $16.99 - $8.16 off with code
UU8L8YDN at checkout =
$8.83 with free shipping on $25+ or with Prime.
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