This is rumor mill stuff so keep those grains of salt handy.
The purported price reductions would make sense, given that Intel's new Cascade Lake-X models arrive soon with up to a 50% reduction in price-per-core. The new Cascade Lake-X models drop into the same motherboard socket as Skylake-X processors, meaning customers would obviously opt for the faster, less-expensive models instead, thus leaving retailers saddled with older (and slower) Skylake-X models that would languish on the shelves due to higher pricing.