Echo Store via Amazon discounts select iPhone 6 cases via coupon code "OMEEYI9H", as listed below. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it starts at around $6.) The deals, with prices after coupon:

• Slicoo Dual-Layer Protection Cover Case for iPhone 6 from $4.99 (low by $3)
• Slicoo Dual-Layer TPU Rubber Cover Case for iPhone 6 for $5.99 (Gold pictured, $24 off)
• Slicoo 3-Color TPU Case with Hard Plastic Case for iPhone 6 for $8.99 (low by $1)