Ending today, Amazon offers the DeWalt 12-amp 7"/9" Variable Speed Polisher, model no. DWP849X, for an in-cart price of $154. At checkout, it drops to $129. With free shipping, that's $50 below our June mention and the lowest total price we've seen. (It's a current low by $41.) It features a variable speed dial that can be set for up to 600 or 3500 rpm, wool ingestion shields, and case cover.

Orders placed via Prime shipping are guaranteed to arrive in time for Christmas. Otherwise, upgrade to 1-day shipping for $40.48 for guaranteed delivery. (Note that cut-off times will vary by ZIP code.)