They need money for listing on exchanges. What happend to the money that was give by Overstock ?
What money? Overstock hasn't paid a dime so far (unless they OTC/bought off exchange.) Some programmers are salaried by Overstock via Medici, but there was no, "Hey, I'll pay you lots of money for the coin."
The coin was all mined. The devs didn't pre-mine this to sell to anyone. There was no ICO.