Did go to Tesco in the end. My dwindling supply of avocados has been suitably replenished at 20p a pop.
Was a total bunfight for the meat. Was almost all BBQ stuff (inevitable given the weather), but matters not entirely helped by Big Hair dumping a whole crate of stuff straight into her trolley without anyone else getting a look in. Wasn't much in there I wanted / needed, but it's the principle.
Still, rather happy with my 60p pack of free range chicken breasts, my 20p tray of lamb chops and my 32p rack of ribs.