Yes, there is such a license.
We call that a Commercial License and it is set up to run on any computer with any OS with only one requirement: The machine
has to be web-connected so that the license can get its authentication from our website.
(If you are in a air-gapped environment -- no wired connection to the outside web -- we have an equivalent capability, which is called a Commercial Lease type license.)
Pricing can be done on a pay-per-test basis or on a pay-per-machine-day basis. There are many variations on the pricing structure, but in most cases the pricing is at about the same level as a regular single user named license, or lower in many cases.
Final note: In some licenses the opportunity to re-sell the eValid outputs (e.g. if you are supporting customers by providing outside monitoring capabilities) is an available option.
eValid License Team