Selling price is the final price you receive from customer. It includes price of shipping if you are charging extra. e.g. If you are selling an item for ₹ 89 and ₹ 50 shipping extra. The selling price becomes (₹ 89 + ₹ 50) ₹139
Shipping cost is the actual cost you are paying to deliver the item. e.g. Suppose you charge ₹ 50 extra to customer but you may be paying ₹ 35 to your shipping partner. So ₹ 35 becomes the shipping cost.
Procurement cost is your purchase or making cost of item. It may include any other cost like product packing. e.g. You buy an item from wholesale at ₹ 30 and ₹ 10 is packing & handling cost. So the procurement cost becomes ₹ 40.
The above calculators are configured to make your math easy. It calculates Goods and Services Tax, retail price discount, profit margin markup, and return on investment calculations.