What on earth is this £11 a bag stuff? I feed mine on layers pellets - £5 odd a bag. The warrens laid all year last (first year) and the Black Rocks, Bluebell and White Sussex are still laying now as the nights draw in. Warrens have stopped though, they are 18 months old which is the same age as the others. Is food cheaper here, or should I be feeding something else?