We found this at nine stores including Target, Walmart, and Amazon. This product sells from $14.05 up to $50. Users can save 71% by shopping at Wayfair.

Prices are currently typical for this product, ranging from $12 to $18, and the lowest price we've seen is $9.

This product is also marketed as the 

40"x63" Sun Zero Blackout Bergen Rod Pocket Curtain Panel White: Energy Efficient, Noise Reduction, Thermal Insulated at Target

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Sun Zero Bergen Theater Grade Extreme 100% Blackout Rod Pocket Curtain Panel, 40"X63", White at Walmart

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Sun Zero Bergen Theater Grade Extreme 100% Blackout Rod Pocket Curtain Panel, 40" x 63, White at Amazon

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Bergen Theater Grade 100% White 63 in. L x 40 in. W Blackout Rod Pocket Curtain Panel at Home Depot

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Sun Zero 63-Inches White Blackout Standard lined Rod pocket Single curtain panel at Lowe's

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