The amount of white commands the price. Low whites are around 5-6ish, mids from 650-1000, and highs 1000-1200. Females are always more. As far as the amount of white it really doesn't matter if he's low mid or high the offspring will be all of the above. Two low white pieds will yield pieds of all ranges. The gene only has an effect on eliminating and altering pattern, not the amount. The only one that effects the amount are any pieds that have any spider in them as all of them will be 90% or better.