The small number of people on the tracker tarif reflects the fact it can't be made mainstream - it's being used by Greg as a flagship product, despite that, but, I'm sure yielding interesting research data for them.
Come October, as born alludes, when spot prices shoot up, it will present the dilema of quitting with a no return of 9 months or playing the long game;
Come October, as born alludes, when spot prices shoot up, it will present the dilema of quitting with a no return of 9 months or playing the long game;