Walmart offers the Piranha Girls' 20" Bicycle in Purple for $80.93. Choose in-store pickup to drop it to $57.83. Outside of the deal below, that's the lowest price we could find by $18. It features an 11" frame, 20" on/off-road tires, and a padded handlebar.

Need it shipped? Amazon offers it for $59.01 with free shipping.

Update: Walmart has dropped the price to $56.67 with in-store pickup. Amazon is matching this price.