Amazon.com has Segway Ninebot Gokart PRO on sale for $1,599.99 after you apply the coupon on the page. Shipping is free.
Here is the (same price) for more info.
Specs:
- Detachable Self-Balancing Transporter
- 96Nm Max Torque
- 1.02G Max. Acceleration
- 15% Hill Grade
- APP Control
- Height Range: 51" to 75"
- Four Driving Modes (Safety, Regular, Sports, Race)
- Top Speed 23 mph
- Max 220 lbs (100 kg) Payload
- 15.5 Miles Range
- Weight: Approx. 112.9 lbs