Neon Mart via Amazon offers the Lighting Ever 16.4-Foot 300-LED SMD 2835 Flexible Light Strip in Blue for $7.99. Coupon code "ACHBEB6J" drops it to $5.99. Plus, Prime members bag free shipping. That's $10 off list and the lowest price we could find for this color via a seller that ships from the U.S. It features a self-adhesive back and requires a DC power adapter (not included).

Don't need it soon? Fancy101-72 via eBay offers a similar one for $4.82 with free shipping; however, it ships from China and may take up to seven weeks to arrive. Additionally, we mentioned a similar strip in Warm White yesterday for $3.99 with free shipping.