The shop on-demand (OD) purchasing method includes an on-line shopping list compiled via a supplemental communications channel (cell phone, land line, Internet, etc.) or compiled via the shop OD VOD process. The list is displayed on the interactive TV (STB-enabled TV) via VOD menu or asset metadata or VOD-VA assets from the cable head end (HE) or shop OD client application operative at the cable HE. To motivate the user-buyer, complementary advertisements for related purchased-ordered goods are (a) compiled at the shop OD server and (b) displayed to the user via metadata or VOD-VA assets. External marketing incentives are sent via supplemental channels (discounts, time-limited offers, limited inventory offers and special sales). A transaction ID is sent to the cable HE with a promoted goods tag. At the shop OD server, a report for promoted goods is created for vendors.