Supplier price ≠ total cost
A quotation tells you what the supplier is charging. It does not tell you what the product will cost to deliver, sell and support in your market. Start by separating the landed cost from the wider cost of doing business.
Build the cost in layers
Product price, freight, insurance, applicable customs duties and taxes, clearance and delivery form the landed-cost calculation. Storage, sales costs and warranty support then affect the full commercial economics. Use the charges that apply to the specific shipment and product.
Revenue ≠ cash flow
Sales can rise while money remains tied up in inventory, deposits or customer receivables. Ask when the supplier must be paid, when the customer pays and how long the gap lasts. A margin percentage is only useful alongside the cash cycle.
The question to ask
After all relevant costs and the expected cash cycle, does this opportunity still make sense?