Poweradd Direct via Amazon discounts select Poweradd Cases for iPhone 6 / 6 Plus via coupon code "JQ8K8KQW", as listed below. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds around $6.) The deals, with prices after coupon:

• Poweradd Paper-Thin Case for iPhone 6 in Translucent Clear for $1.99 ($20 off)
• Poweradd Prime Series Case for iPhone 6 in three colors for $1.99 ($24 off)
• Poweradd Dual Layer Case for iPhone 6 in Black or Silver for $2.99 ($20 off)
• Poweradd PC+TPU Case for iPhone 6 in Grey or Blue for $2.99 ($17 off)
• Poweradd Sturdy Series Case for iPhone 6 in Red for $2.99 ($22 off)
• Poweradd PC+TPU Case for iPhone 6 Plus in Blue for $2.99 (pictured, $27 off)
• Poweradd Hybrid Series Case for iPhone 6 Plus in Gold for $2.99 ($20 off)