can anyone explain why prices of books in this series lurch from £0.90 to £5+ seemingly at random. I have fortunately, over time, & with the aid of a 3rd party price drop web site - been able to pick up 7 of the series at £1 or less, but typically on any given day they are £4+ each.
why can't amazon operate a sane, consistent, logical pricing policy so that readers of the series can get into a read one, buy the next one routine without being ripped off by opportunist/pedatory pricing.
for example I bought 4 books in this series at £0.90 a few days ago. As I type, they are now £4 each. where is the logic ? where is the incentive to "trust" amazon to offer fair pricing & not to have to google kindle price drop monitor