As above, many buyers sub £50 items simply impulse buy, even on larger items as well.
Many years ago I contacted my clients for the month under the guise of a teelphone survey to improve service, asked a few random questions and ended with the question I really wanted an answer too, "How many quotes did you get before buying"
90% of my clients bought from myself on the night with no other quotes, my product at the time, PVCU windows, average order values of £4k.
A good listing answering there points of interest with value for money will sell, no need to be the cheapest, particularly with the new best match search, even the cheapest items with a few minutes to go can end up on page 5 of the search results
