UK_John: I am still not even sure if it is just Space Rangers or Space Rangers 2!
Waltorious: GOG has both games available separately. I own Space Rangers, but not Space Rangers 2 (yet) as it was added more recently. The two games have separate entries in the GOG store.
GOG's version of Space Rangers 2 does NOT contain the Reboot expansion. I do not know if they are planning to add it later.
Well, I got Space Rangers 2 and Space Rangers came with it free when it was first sold, so I got a copy for £9.99 to get both and then I found yesterday Space Rangers 2 Reboot for £4.99, so got that too! ::)