Yes, the Nik version was actually 3x more than what google charged. I use a mac so I dont have .exe files. However the modules work just fine here on my mac as standalones and they can be called from Photos and other Photo apps as well. I've been using them as standalone for years.Sue, I think I paid about twice that many years ago from Nik.
If you create a shortcut to the .exe files of the original modules they will run as standalone apps.
Of course they need to be installed and you have to be 'savvy' about saving your results to avoid overwrites.
Luminar and AuroraHDR are both great apps. For mac users there's also the Creative Suite which in many ways duplicates the features of the Nik software, except for Viveza which I love. I dont think that Skylum is developing the Creative suite anymore. They might surprise and bring out updated versions. Maybe.Just my thoughts . . .
There were times that I really hoped that Nik software was been updated. I just liked their U point technology. But as time passed by I thought it might be wise to look for an alternative. And by now I don't see their way of selection, once their strong point, as a plus. But maybe the upcoming update might change everything. Another point is that I use Fuji camera's and DxO still don't offer Fuji RAW support.
BTW Affiniy and Nik work fine together. On YouTube you can find many movies how too install. Works perfect, although I only use the image borders sometimes.
As for now I'm testing again Luminar. Been a user since they started but found they just didn't do the things I wanted. But after reinstalled it, with all the new updates, it's not bad at all. At a matter of fact it's good.So far I really like it. Might be an alternative, (but there are many more). Not expensive and all in one program.
Just my thoughts . . .