Amazon.co.uk offers the LEGO Mindstorms EV3 Set, model no. 31313, for $320.96 (£204.99). At final checkout it falls to $267.48 (£170.83). With $7.75 (£4.95) for shipping, that's $20 under our August mention and the lowest total price we could find by $110. It has a remote, USB, and app that allows you to build a robot with three sensors.