For those on the lookout for a gaming mouse that combines performance with affordability, the Asus TUF Gaming M3 Gen II might be the best deal of the day. Now priced at just $19.99 on Amazon, this entry-level gaming mouse is 20% cheaper than its original Amazon listing price. It is also now selling for under $20 for the first time, which makes this an unbeatable discount for the particular product. Do act quickly, though, as there's no guarantee that the discount is going to last.