Who has conned you Dougal ? Yes there has been high volatility again but with some forward planning you can take advantage. Sell forward if the price leaves you a decent margin or elect not to grow if it doesn't. There is no point putting seed in the ground and just hoping that the yield and price will conspire to leave you in profit.
Yes, last seasons N cost £330 but today the same stuff is £175. Stick two fingers up to Grow-how and buy imported N at £165 or Urea at £210.
I can't grow feed wheat profitably so I don't try. I don't feel conned though.