They are built and delivered differently, so they are priced differently - one by the size of your estate, the other by what a deployment in your company actually involves. Both end in a conversation about your environment rather than a shopping cart. Pick the one you came for.
Priced by the size of your estate - physical cores, read straight from VCF Operations. One subscription covers the whole catalogue, and under 200 cores the infrastructure packs are free to run in production.
Three things bought together: the platform and its upkeep, the work of implementing it in your environment, and the consulting that turns your processes into something it can run. It starts with a paid pilot, credited in full against the deployment that follows.