From a letter published in Sinclair User: "I wrote to you to inform you that we had reduced the price of Cycle Planner/Growth Tracker from £7.25 to £4.95. Unfortunately that was not conveyed in the review which had as one of its criticisms the cost of the cassette. We had two quarter-page advertisements in Sinclair User May/June - and have refunded £2.30 to all mail order customers after May 25."
