Mong Kok is a area in Kowloon island in Hong Kong, where everything is sold cheaply in outdoor markets. There you can find bags, jewelry (some knock-off), electronics, outwear accessories, luggage, traditional Asian merchandise (great for gifts and souvenirs).
Most items don’t have a price tag. You ask the seller how much and then bargain as much as possible. From working at my internships, I was told to offer half what the seller asks for. Then begin to walk away and you’ll probably get it for half the price. It worked in most cases or close to half the price. Some sellers stayed stern on their prices, said they were ‘fair’ and if you really wanted the item then you’d need to pay their price.
The area is extremely crowded with locals and visitors also shopping for the bargain items. Above is a single typical outdoor market.