Amazon offers Prime members the Little Tikes Gas 'N Go Mower, model no. 633614M, for $12.49 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $7.61.) That's $3 under our May mention and the lowest total price we've seen. (It's also a current low by $6.) It features mechanical sounds (including popping beads and engine sounds) and a removable gas can.