In some embodiments, apparatuses and methods are provided herein useful to provide a visual indication of a weight of products stocked on a display assembly, such as a shelf of a shelving unit. The visual indication is provided by virtue of the display assembly having a product support member with a curved configuration that sequentially flattens as additional weight is added thereto. An electronic imaging device can be mounted proximate to the assembly and oriented to capture an image of the product support member and a control circuit can be configured to receive the image and analyze the image to determine a current stock level.