Amazon takes 20% off a selection of gift cards. (Most discounts apply at checkout; some require coupons, as listed on the sale page.) Plus, all orders of physical gift cards bag free shipping. Deal ends June 22.

A few best bets:
-- $50 JCPenney eGift Card for $40 (low by $10)
-- Two $25 Jiffy Lube Gift Cards ($50 total) for $40 (low by $12)
-- $50 Longhorn Gift Card w/ $10 Amazon Credit for $50 via coupon LONGHORN10 (low by $12)