'Most people ignore most poetry because most poetry ignores most people.'

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Adrian Mitchell

Some background on Chapbooks

chapbook, n -- a book of popular ballads, stories etc, formerly sold by chapmen

chapman, n, pl chapmen -- (archaic) a trader, especially itinerant

From the Old English ceapman, and connected with ceap -- barter, bargain, price, property.

So chapbooks traditionally present accessible content at a cost that won't break you.