According to SR4A Active Softs are Rating*10,000¥ as opposed to Rating*3,000¥ in SR4.
The Skillsoft Clusters from Unwired range from 10,400¥ to 15,200¥. All except the ArchMage one have3 at least five points in Activesofts which alone should be 50,000¥. The rules for new clusters however suggest only a 20% cost reduction.
Were those values ever errataed? If not it's the only way to get a few cheap skillsofts at the moment.