I don't lie--regardless of higgler pressure. I don't say I will be back later--because then every time that vendor sees me he will either implore with me or worse start guilting me or even scolding me for not stopping. "No thank you mon" has always worked for me. I don't feel like I owe it to anyone to tell them that I am on a shoestring budget, don't have any money etc. No is no--but I say it with a thanks and usually a smile unless the person is just rude. Usually after one or two walks around they know me (some know me from other trips) and know I am not a buyer. But I do like to stop and chat with vendors, and check out their stuff--a lot really nice people with interesting stories to meet.