Walmart offers the Eclipse Samara Blackout Energy-Efficient Curtain 4-Pack in 11 colors (Espresso pictured) for $33.88. Opt for free in-store pickup to avoid the $4.97 shipping charge. That's tied with our mention from two weeks ago as the lowest total price we've seen. (It's a current low of $34.) They're available in sizes 54", 63", 84", or 95". You can mix and match colors and lengths.