Karl Sagan
Grandmaster
Ya selling 1k don coins for 200k that you can spend on anything is cosmetic, indeed.
The point is you don't HAVE to do this to get anything. Everything in the game is realistically attainable for a skilled player (or a lucky one, or an unskilled one thanks to the idoc changes).
There are plenty of people who are mega rich on the server that have never donated.