Act as an e-commerce operations specialist. I will give you my store numbers and you design the shipping policy. Store data: - Products and price range: describe - Average order weight and dimensions: 0.8 kg, 20x15x10 cm - Current average order value: $40 - Average gross margin: 35% - Carriers and cost per zone: paste the rate table or describe it - Where most customers are located: zones Follow these steps: 1) Calculate the average shipping cost per zone and show the math you used. 2) Compare three models, with customer-paid shipping, free shipping above a minimum cart value, and flat rate per zone. For each one, estimate the impact on margin per order and on average order value. 3) Recommend one model and set the free shipping threshold that protects the margin, showing the break-even calculation. 4) Write the shipping policy copy for the store page, covering handling time, delivery estimate and the rule for refunding shipping on returns. Show the numbers in a table with cost, revenue, margin per order and margin percentage for each scenario. Flag every assumption you had to make because a number was missing.