Most of the wares are cheap clothes, shoes, make-up, fashion and mobile phone accessories and toys, mostly new merchandise, both original and knock-offs (copies) and some small animals. There are also a whole lot of food shops, some small bars, 1-2 with live music, an incidental barber or nail salon and some beggars.
The food section is covered, but most of the market is open and the ground is dusty, so I imagine it'll be a mess in the rainy season. Parking is difficult.
[Prasert-Manukitch Road, near Watcharapon junction; ตลาดนัดเลียบด่วน Liab Duan Night Market; open every day 18:00-24:00]