Many thanks to SWLing Post contributor, Grayhat, who writes:

Maybe it’s old news for you, I just discovered it and thought you may
be interested, the commercial circuit simulator “Micro-Cap 12” which
was sold at around $4,500 for each license is now *free*, I found the
information here along with some further details:

https://hackaday.com/2020/01/08/commercial-circuit-simulator-goes-free/

The decision of releasing it as freeware seems to be related to the
fact that the company selling it (Spectrum Software) closed (not sure
for the reasons); anyhow, since the site or the download link may
disappear in some time, I think it would be a good idea to pick a copy
of the software, the full CD image including the program, libraries and
everything else can be downloaded from this page

http://www.spectrum-soft.com/download/download.shtm

Thank you for the tip! I agree with you about grabbing a full install of the application while you can!