The Title is pure Gold. GTA V sold well? Yeah, no shit, Sherlock!
Probably not the Most sold of all time, but chances are it made the Most revenue. I mean it's still selling for Full Price (69.99 € @ PlayStation Store in Europe, that's friggin 90 $!) After all that time. And it's not done yet, still very present in the Charts and #1 in PlayStation Store. Including digital and upcoming PC Sales, 60 Million should not be impossible and 50 Million are Pretty much a given right now. Very Impressive indeed.
Official member of VGC's Nintendo family, approved by the one and only RolStoppable. I feel honored.