Saw this on Costco's website:

Segway Ninebot ES3 KickScooter With Dual Battery for $599.

Features:
Powerful Dual Lithium Batteries with 374Wh Capacity
Max Speed: 15.5 Mph, Typical Range 28 Miles
Motor: 600W, UL 2272 Standard
Weight Capacity: 220 lbs, Recommended for Ages 14+

Looking at the Segway website, which doesn't list the ES3, it looks like it has the range of the ES4, but the speed of the ES2. The ES2 runs $569, and the ES4 is $769. So basically this is a $30 more expensive ES2 with almost double the range.

Looks like a good deal, even better if you catch it on sale @ Costco.