The bronze artefact

You are on a vacation to a foreign country. You visit a local market and come across a nice bronze artefact. While you are having a closer look at the artefact, the shopkeeper approaches you and asks you to make an offer.

You are really interested to buy. You think and based on similar artefacts' prices, you say " I will buy this piece for $50 only."

The shopkeeper immediately agrees and starts to pack the item.

How do you feel in this situation?