Dealsbuy2015 via eBay discounts a selection of used Otterbox and LifeProof smartphone cases, with prices starting from $4.99. (Prices are as marked.) Plus, all items bag free shipping. Deal ends March 10 at 10 am ET. A couple of best bets, with comparisons to new units:

• Used OtterBox Commuter Series Case for Samsung Galaxy S4 for $4.99 (low by $3)
• used LifeProof Fre Waterproof Case For iPhone 5/5s for $13.99 (pictured, low by $29)