CPO Outlets via Rakuten offers the Makita 6.5" Plunge Circular Saw with 55" Guard Rail, model no. SP6000J1, for $349.99 with free shipping. That's the lowest total price we could find by $28. Features include a 12-amp motor, 2-3/16" cuts at 90°, 1-9/16" cuts at 45°, and a plunge release lever.

Of note, enter coupon code "REWARDME" to get 1,750 Rakuten Super Points. (They convert to a $17.50 Rakuten credit.)