Eating in Bangkok can be as expensive or cheap or exciting (read: street food) as that in Manila.
As much as possible I try to eat in different places to maximize my visit here (leaving tomorrow!). It’s not always Thai that I go for. One time I found a really cheap steak house and ordered dory steak with hotdog (that tastes like Ikea hotdog) and fries and vegetable salad and slice of bread–all below 100 baht (120 pesos/3 USD). On my last night, I saw a foodcourt stall that serves Vietnamese pho (heaven’s gift to Vietnam I’d like to think). Then of course there was one time when my friends and I couldn’t resist the temptation of McDonald’s (tsk).