He could've done that AND bought several ships from the exchange too.
25k c-points -> that's about 110 Doff packs. -> about 440mln.
The Doff packs go around 4 mln a piece
A jem harad ship is about 190-200 mln right now (prices may vary)
A D'kora and a Galor... also about 200 mln both
He would've gotten all 3 Ships easy AND still had some money leftover, considering he didn't try go get a better deal for his money.