You can discover many items here, but there's inadequate parking and it tends to be quite crowded. The market is also quite disorganized. I would recommend it if you're looking for something you can't find anywhere else.
If you look for something to buy or sell second hand this the place to go, you may find something from completely useless like used cans to like real antique expensive items, got some separate buildings for plumbing, animals, bicycles, clothing and electronics