Because large numbers of people always buy cheap. Going back to amazon, just take a look at the 'most wished for' in any category; then look at 'best sellers'

Because large numbers of people always buy cheap. Going back to amazon, just take a look at the 'most wished for' in any category; then look at 'best sellers' for the same category and you'll see, in a lot of cases, cheap wins even when the average review is like 2.5 or, sometimes less.