u/Temporary-Yoghurt-85

As per the title, I want to try and invest in some Lego and then make a profit later on.
The idea is to just try it out and use the profits to buy myself a set I want, I just don't know what are some good sets to invest in right now as I am new to this, the only things I know so far is that:

- Retiring sets are good since you don't have to wait as long
- Sets with exclusive minifigs are good, but how do I tell if they are exclusive?

Right now I am looking at the dune Ornithopter set that seems nice, I might get one for myself it's so good