Pre-owned EV3 Mindstorms core set.  This is an awesome entry to robotics.  These kits were used from elementary school to college engineering programs.  To the best of my counting ability, this set has all of its parts.  Prior to disassembling the basic driving base (see last picture), I ran the demo program from the "brick" and it behaved normally.  It's important to note that the Lego website indicates the software for EV3 will only be available for download through July 31, 2026.  NO INTERNATIONAL PURCHASES, PLEASE.