Diamondback Bicycles at Amazon 25% off + free shipping

As one of its daily deals, Amazon takes about 25% off a selection of Diamondback bicycles. (Prices are as marked.) Plus, these orders qualify for free shipping. Deal ends today. A couple of best bets:

• Diamondback Kids' 2017 Grind Complete Bike for $149.99 (low by $30)
• Diamondback Unisex Overdrive Hardtail Mountain Bike from $337.49 (pictured, low by up to $83)