yes 124Gb is the patch... a fresh install will take an extra 5G and is normally worth doing over a 'patch' for Larian games but always keep the old folder when you uninstall so your Larian account details are saved/ don't need resigning in
yes Larian says their patch is only X but they are talking about Steam only when they post those numbers... yes its always been that way
yes Gog is very capable of unpacking a patch file the same as Steam but someone has to do the work and thats only worth it for their Steam customers... in other words yes Steam customers get a better deal both in effort and actual money spent but to be fair Gog customers only pay a few extra $% over Steam so its mostly just putting up with less dev time spent on actual 'working' features
