The price you enter should include your profit. Enter the price including your profit. Keep the profit 10-15% more than you think due to third-party transactions used (Approx 5%) (If customer uses). Make deal with the supplier accordingly. For eg - If we choose Shopify then 5% Shopify Transaction Fees & 5% the customer using third party payment app their fees for transaction.
After the MRP is displayed choose price to Round off. For eg : if the price displayed is 9543 then choose MRP as 9545 or 9540