K-amps said:
Is LR5 even available as a standalone anymore?
YES.
You can Google 'Adobe Lightroom' and you get several million vendors who will sell you a boxed copy.
Or you can go to Adobe, [irony] they cunningly hide it on their 'Products' page under the Buy button next to the Lightroom tab. [/irony]
https://www.adobe.com/products/catalog/software._sl_id-contentfilter_sl_catalog_sl_software_sl_mostpopular.html#