Walmart has the Huffy 27.5" Vertis 36V Adult Electric Mountain Bike (3 color options) on sale for $548 with free shipping. Fitting riders 5'0" and taller.

• 350W rear-hub motor, 21-speed Shimano drivetrain, 36V battery
• Max Speed: 20 mph / Max Distance: 40 miles / Max Weight: 220 lb