There doesn't seem to be too many GPK collectors on this site. It seems to appeal mostly to a niche group of collectors from within a few years of a particular age group. Of that narrow group of collectors, not many seem to care much for the new releases. The thing is that Topps continues to sell new product twice a year, so somebody's buying.
I'll be making my complete 180-card set purchase of the new release once a reasonable offer can be found. So far, only one seller is offering the set on Ebay, and is way overcharging. I'm expecting this set to be a lot better than the Battle of the Bands set released in October 2017, but I'm interested to find out how it compares to Adam-Geddon released in January 2017.