Abstract: A combination vending/return apparatus includes a series of stacked counter-sloped, gravity fed track assemblies with radiused transition segments to receive and store empty large-volume bottles and to deliver pre-filled large-volume fluid-containing bottles. The apparatus is configured to accommodate, among other sizes, at least one of three (3) gallon, (4) four gallon, or (5) five gallon size bottles. A. dual elevator subassembly permits filled bottle dispensing and empty bottle receiving from a single door. The apparatus includes a processor-controlled transaction panel to make bottle selections for purchases and returns, and to handle electronic payment, promotional and credit transactions. Also disclosed is a method to vend large-volume fluid-containing bottles and retrieve used and emptied large-volume water bottles.