Windows seats with built-in storage space can be purchased from CottageandBungalow.com, KMart.com, HomeDecorators.com and Wayfair.com. As of June 2015, CottageandBungalow.com sells a bay double window seat and cushion for $1,890. The seat comes in a wide variety of colors, fabric and welting, and is equipped with two storage drawers.
KMart.com stocks over 50 different types of window seats with storage from such brands as Safaveih, Oxford Creek and Prepac. The window benches sold through HomeDecorators.com come in many different styles such as farmhouse, classic and industrial. Prices range from about $150 for a Madison 36 inch wide lift-top storage bench, to around $500 for a Donovan 60 inch wide leather lift-top storage bench.