Walmart shows live stock most of the time, but you should still check before you buy. Their systems use store scans, vendor updates, and sometimes RFID, so items move fast. Ever had a cart full of things and one was gone at checkout? That can happen. Sellers and vendors help keep shelves full, yet errors and delays occur. Look for low-stock alerts, confirm pickup or ship times, … [Read more...] about Walmart Availability & Caveats