What? If anything, it looses a bit of value.
The first Colonizer is 10 cosmite cheaper. So you throw it out earlier and at less cost.
The next one costs 10 Cosmite more (the old value), but you propably got a +5 income from that first one.
If that one also get's one comiste node, you are already at +15. Way earlier then you would have been.
I was talking about selling cosmite to other players.