Abstract: Systems for vending products to a customer that encompasses a group of co-located vending machines managed by a vending company, a database of current inventory of products in the vending machines and customer purchase history; and the use of a personal electronic device by the customer. Embodiments include a single order by a customer from a sorted list of prior purchases, and where a single purchase comprises sub-products from multiple co-located vending machines. Embodiments include the customer selecting either products or vending machines from a list of options provided via the user interface of the personal electronic device, wherein the list of options depends on the actual available inventory in vending machines co-located with the customer, and the customer purchase history.