Ta ac gull - good spot.
Here's the Derby system explained... "Demand Pricing"
Derby County operates demand based pricing for Home League matches, (it is not in place for Cup matches as prices are confirmed by the competition operators i.e. The Football League or The FA).
When tickets go...
May get fixtured here - but in the small print stuff re season ticket renewals - it seems we will be switching from category A, B, C priced games to a different system re dependant on weather, demand, position in league of opposition etc
Derby have a similar system (we switched to same ticket...