I like the idea of doing back of the envelope calculations, but i feel like these are all off... starting with the populations... sf and ny are different by a magnitude of 10, but i suspect they have comparable populations in their delivery range... idk... just guessing.<p>also... you spend $6&#x2F;day on food?  &quot;yuppies&quot; as you condescendingly call them... spend far more. i assume&#x2F;hope you are buying groceries and not eating out on $6.  i know homeless people that spend more on food than you. srsly.. this homeless guy that lives by my loft in a doorway... he eats at mcdonalds and family dollar, and he spends more than $6 on food per day if he has the money. otherwise he eats at a shelter. you are clearly not their target demographic.