If you're prepared to eat like the locals do, nothing in Bangkok is expensive. I have two favorite places. First, an Issan restaurant called Krua Rommai, 16 Sukhumvit soi 36 (take the Skytrain to Thong Lo; soi 36 has a Shell service station on the corner and the restaurant is a short walk down the soi). Tel: 02-661-2340. Open: Monday-Saturday, 11 a.m. to 10 p.m. You'll eat for less than US$10 here easily but it doesn't take credit cards. Amazing barbecued chicken with sticky rice, really interesting greens. Larb, the finely chopped, really spicy salad with chicken or pork and ground roasted rice. Eggplant in a spicy and sour sauce. And the orm, a hot curry with fish. Second, Rut & Lek, at the intersection of Yaowarat and Soi Texas (Yaowarat is a one-way road through Chinatown. Soi Texas, home to the Texas parking garage, comes in from the right. Rut & Lek is on the far corner as you head in the direction of the traffic.) Open: daily, 6:30 p.m. to 2:45 a.m. Three people can stuff themselves for $25, including beer. (Again, no credit cards). This is all seafood -- barbecued fish cooked in aluminum foil with a herby paste; amazing giant shrimps; great tom yum (it's hot though! really hot!) and crab fried rice that is divine etc