Amazon offers its Prime members the LEGO High Speed Police Chase Play Set, model no. 60042, for $15.11 with free shipping. (Non-members can spend $25 or more to get free shipping; otherwise it adds $6.15.) That's a buck under our March mention and the lowest total price we could find by $6. This set includes two crooks, a policeman, police car, two scrambler motorbikes, and a ramp.
Orders placed via Prime by December 22 are guaranteed to arrive in time for Christmas.