Abstract: A product exchange system may include a first purchaser device associated with a first purchaser, and a second purchaser device associated with a second purchaser having a shipping address. The system may also include a product exchange server configured to obtain image data of a purchased product for return from the first purchaser device, and determine, using a machine learning algorithm, a product condition of the purchased product for return based upon the obtained image data. The server may also determine, using the machine learning algorithm, a resale price of the purchased product for return based upon the determined product condition, and operate an electronic marketplace for resale of the purchased product for return at the resale price. The server may also communicate the shipping address to the first purchaser device based upon a purchase of the purchased product for return by the second purchaser in the electronic marketplace.

Abstract: A medication inventory system may include a medication tray that includes compartments for storing respective medications. The medication tray may have a tray identifier associated therewith. The system may also include a mobile wireless communications device configured to obtain at least one image of the medication tray, and apply a Hough line detection algorithm to the at least one image to determine a boundary outline of the medication tray. The mobile wireless communications device may also be configured to generate a current medication stocking list of the medication tray based upon the boundary outline and the tray identifier from the at least one image.

Abstract: A medication inventory system may include a medication tray that includes compartments for storing respective medications with each medication having a respective medication identifier associated therewith. The medication tray may have a tray identifier associated therewith. The medication inventory system may also include a mobile wireless communications device configured to obtain images of the medication tray and generate a current medication stocking list of the medication tray from the images. The medication inventory system may also be configured to determine a desired medication stocking list for the medication tray based upon the tray identifier and determine at least one missing medication based upon the current medication stocking list and the desired medication stocking list.