Are they really fake? Since the companies of the "real" products are next to the "fake" products. There may be a product difference, but the manufacturing process remains the same. With a very slight difference for good-quality "fake" products
They do use the real logo’s but the quality is probably no where close to the real one. And the price difference is massive. Some bags might cost about 2500$ for the real one and at this market it can be like 50-70$ at the most for the same product.
I found that both Bangkok and Pattaya are pretty cheap, but Bangkok has a lot more options, more night markets and weekend markets. Chatuchak weekend market is a very good one with cheap prices. You can always bargain if you feel it is reasonable, just be nice about it. They will always have a higher price on the ticket.