Echo Store via Amazon offers a selection of Slicoo Pebble Series Dual-Layer TPU Rubber Cover Cases for iPhone for $5.99, via the coupon codes listed below. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs around $6.) The deals:

• Slicoo Pebble Series Case for iPhone 5/5S in five colors for $5.99 via "85WPI6W9" (low by $3)
• Slicoo Pebble Series Case for iPhone 6 in seven colors for $5.99 via "FK8G96XO" (low by $3)
• Slicoo Pebble Series Case for iPhone 6 Plus in seven colors for $5.99 via "C66J2O8K" (pictured, low by $3)