ECON 2103 · Unit 2 · Long-Run Cost & Economies of Scale
Coffee Shop Cost Builder
Build a coffee shop from the menu on the left — rent, machines, staff, bean sourcing. The short-run cost table and cost curve on the right update instantly. Save several builds and the tool draws the long-run average cost (LRAC) envelope for you.
1 · Build your shop
Pick a preset to start, then change anything you like.
2 · Your costs
Fixed cost is paid no matter how many cups you sell. The per-cup cost rises a little as you get busier.
Fixed cost (TFC)
$0
Per-cup cost
$0.00
No curves saved yet. Build a shop, then click “Save this build as a curve.” Add the Small, Medium, Large and Chain builds to see the envelope.
The thick gold line is the LRAC envelope — the lowest average cost achievable at each output, traced along the bottom of all your short-run curves.