Currently my LEGO collection / inventory entails 365 sets. Considering that most of those are from random bulk of LEGO sets a few individuals have been buying the fact that I only have around 10 sets which I own more than one copy is quite astonishing. Puts it in a perspective how many different LEGO sets are out there.
Considering that it's also quite surprising that I recently found out I now own 4 copies of one particular set. And it's one of the older, more rare ones as well. While not hugely expensive it's still quite nice investment considering the size of the set that isn't that big.
Of course I would have preferred to find the different sets from that series as it's one of those I have been aiming to complete. But at least I can always sell the sublimates and use the profits to then buy those missing sets to expand my collection.
On the other hand, as the set in question is one of my favourite space themed sets it could also be nice to have an actual fleet of those spaceships on display.