The Chatuchak weekend market in Bangkok has long been no secret any more, it used to be like that and has changed in price over the years. No question, the range of offers is extensive, almost unmanageable, and finding a suitable gift to find a great souvenir, finding a bargain of a special kind is guaranteed on the Chatuchak market.
The market is very popular because the range of interesting offers is very extensive and trading around the price is possible almost everywhere. Of course, the shop owners sell primarily to the many private visitors to the market, but there are also many large shoppers here looking around to supply their ebay shops with supplies ;-)