EDSA 800 - is possible if you go really late, or after 12 / 1am, when no-one left, and the mamis are desperate to close a deal .. can offer you a cheap barfine price
but then again, if you're there late, might as well get the girl's number and just arrange for something after office hours... much cheaper, can get away with just tips to the girl = 3-400 php.