A friend of mine had a similar experience regarding overpriced taxis. This happened when she visited Seoul, South Korea. They were planning to go to N Seoul Tower from Myeongdong and as they want a convenient travel, they chose to ride a taxi. N Seoul Tower and Myeongdong are close distance destination so it wouldn’t take much money to get from here to there.
But when they arrived at the N Seoul, the taxi driver charged them 20,000 KRW (About 20 USD) and they were shocked because it was very overpriced! My friend thought that the driver didn’t use the meter and just charged them at a high price because they are foreigners. She said to me that instead of making a commotion, they just paid the said amount.
Always remember this when you are traveling: Know the costs! Google is accessible, be aware!