What do you swap when the shelf is short?
Seven staples, one Mumbai DMart, sixty-three mornings of Bhav's recorded shelf prices. Three of the seven were missing on 4 October — recorded out of stock, with a time — and the list still had to be bought. The page is that morning: a shelf you can re-plan by hand, a budget on a brass wire, and a receipt for every substitution it makes. Nothing is fetched and nothing is guessed: a missing price stays missing.
Filling the gaps is not the same as affording the basket. Three substitutions made all seven present for ₹1,020 — still ₹20 over. The fourth bought no gap at all; it swapped the tea, and took the basket to ₹904.












