Walmart offers the Black + Decker 20-volt Max Lithium-Ion Cordless 5.5" Circular Saw for $44.88 with free shipping. (Amazon charges the same; however, it's currently backordered.) That's tied with our mention from three weeks ago and the lowest price we could find by $11. It features an adjustable bevel and tool-free cut depth adjustment.

Update: It's now out of stock at Walmart; however, Amazon still offers it for $44.88 with free shipping.