Wow! You'd certainly have to have your wits about you shopping down that market isle! I do like the idea though that if the train should stop then you can just hang out various train windows and collect an entire weeks grocery shopping.
Reminds me of Bangkok. Took a train ride there once, travelled through the tin shantys. These were actual homes, incredibly poor people. Very rarely a man in the family and the mothers tied the infants to a stake driven into the earth floor while they went to their meagrely paid job. Very sad.