Growing up in rural UK (Cornwall) this sort of thing is a common sight. Supermarket cauliflower is 1/2 the size and 3x the price so it was always a no-brainer to use them.
What I found surprising and heartwarming is seeing this in London (where we have the more urban problems other commenters here have highlighted). A small house near the busy Waterloo station evidently has an over-abundance of fruit and offers mismatched jars of homemade jam from a small box on their windowsill every summer. A welcome bit of countryside mentality in the uncaring metropolis.
