g/p calculations were wrong. Strawberries can yield a max of 5 harvests per Spring season. 5 x 120 = 600g. 600 - 100 (seed cost) = 500g. 500 / 28 (days in spring) = 17.86g per day
* If planted and watered on or before the 4th day of Spring. This is without crop speed growing bonuses from higher farming skill level or 'Speed-Gro' / 'Deluxe Speed-Gro'. Such bonuses raise the gold per day value for all crop types to varying degrees.