We found this at 14 stores including Wayfair, Target, and Walmart. This product sells from $20.50 up to $100. Users can save 79% by shopping at Amazon.

Prices are currently low for this product, typically ranging from $36 to $69, and the lowest price we've seen is $18.90.

This product is also marketed as the 

Albesa Room Darkening Single Curtain Panel Single Panel at Wayfair

,

Kaiden Rustic Vogue Geometric Room Darkening Single Window Curtain Panel - 52" x 95" - Black - Elrene Home Fashions at Target

,

Kaiden Geometric Room Darkening Window Curtain at Walmart

,

Kaiden Black Geometric Poly-Linen 52(in)X95(in) Grommet Top Blackout Curtain Panel at Home Depot

,

Elrene Home Fashions Kaiden Geometric Room-Darkening Window Curtain, Single Panel, 52" W x 95" L (1 Panel), Black at Amazon

,

Elrene Home Fashions 95-in Black Geometric Room darkening Standard lined Grommet Single curtain panel at Lowe's

.