We found this at ten stores including Overstock, Target, and Walmart. This product sells from $7.99 up to $40. Users can save 80% by shopping at Amazon.

Prices are currently low for this product, typically ranging from $12 to $26, and the lowest price we've seen is $5.59.

This product is also marketed as the 

40"x63" Sun Zero Blackout Kenneth Energy Saving Rod Pocket Curtain Panel Black: Noise Reduction, Energy Efficient at Target

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Sun Zero-Sun Zero Hayden Energy Saving Blackout Rod Pocket Curtain Panel, Single Panel40x63-Black at Walmart

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Sun Zero Nolan Energy Saving Blackout Rod Pocket Curtain Panel, 40"X63", Black (Single Panel) at Walmart

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Sun Zero Easton Energy Saving Blackout Rod Pocket Curtain Panel, 40" x 63", Black at Amazon

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Sun Zero 63-in Black Blackout Interlined Rod pocket Single curtain panel at Lowe's

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Gavin Energy Saving Black Polyester 40 in. W x 63 in. L Rod Pocket Blackout Curtain (Single Panel) at Home Depot

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