Local starter: quantity × unit price + delivery. Compare the same units/currency and required quantity. Lower total does not automatically mean better fit.
No AI, accounts, network, purchasing or saved changes. Closing/reloading restores the initial example. This fixed-rule starter does not implement arbitrary instructions.
Known test: (3,8,4) → 28; (2,11,3) → 25. Zero test: (0,8,0) → 0. Blank/negative input must be rejected. Calculate your own expected answer on paper before another test. These fictional examples are not financial advice.