The marked price is the price displayed on the price tag or other price display. It's usually the first price that the retailer puts on the product, and may or may not be the recommended retail price. When you see a sign saying '20% off marked price' for example, you look at the printed price on the ticket and take 20% off that.
Market price is that prize, in which included of all taxes like duty and running cost also involved in this cost. That value is only for retailers.
It means the original price of a productd played in a store.
The price on the price tag.