This must be fairly new because we look at LEGO in the store all the time. And we’ve only just seen this. My son is already excited. He’s asked his grandfather if he can wash his car for $10. :D
Amazon has the LEGO Creator 3in1 Extreme Engines 31072 Building Kit (109 Piece) for $8.79 ($1.20 off regular price of $9.99).
Shipping is FREE with Amazon Prime or an order of $25 or more.