We found this at seven stores including Target, Walmart, and Home Depot. 

Prices are currently typical for this product, ranging from $52 to $76, and the lowest price we've seen is $39.40.

This product is also marketed as the 

Outsunny 4' x 4' x 1' Galvanized Raised Garden Bed, Planter Raised Bed with Steel Frame for Vegetables, Flowers, Plants and Herbs at Target

,

Outsunny Galvanized Raised Garden Bed, 4' x 4' x 1' Metal Planter Box, for Growing Vegetables, Flowers, Herbs, Succulents, Gray at Walmart

.