Glyde cuts $5 offany single item with no minimum via coupon code "SUMMER5". (The discount is taken from the cost of the item plus shipping, so items less than $5 will be free with reduced shipping costs.) That's the best dollar-off discount we've seen from this merchant, which sells used video games, books, DVDs, and CDs. Shipping starts at $2.55. Coupon expires May 25.