need windows hosting for 4 users to run VFP9 SP2 simultaneous.

We need windows hosting for 4 users to run a single VFP9 SP2 app simultaneously.  This can be windows 10 or server as long as 4 users can run the single VFP application simultaneously. Must be low cost and reliable. All users are in the USA.

We are now using server 2012 successfully, but the cost is too much and will increase 20% soon from the vendor we have been using. Not worth it for this 1 application.

I appreciate any suggestions.

Ken