How much does it cost?
Joining VivoSim is free. When on-line you can visit many locations both in VivoSim and beyond that have shops where you can buy things for $0 i.e. free!
VivoSim has its own virtual currency coin called the 'Vivo' which allows you to 'buy' and 'sell' as part of the VivoSim gameplay. Note that Vivo's have no value in real currency. You can also earn experience points (XP) by various in-world activities and task. You can find more information on the Virtual currency page.
We would also like to mention that these "virtual" worlds run on "physical" computers and do incur financial outlay to keep running, so we offer anyone that wishes to the opportunity to donate to the running of VivoSim.