How ya goin! I brought an RS Cosworth Saphire about 2.5years ago for 18,000. I sold it a year ago for 15,500. I was desperate to sell quick so took less than it was worth. You should still be able to get around 18,000 - 22,000 depending on its specs and condition. I wish I didnt have too sell mine it was a great car, WRX\HSV drivers hated it!!!
Hope this helps.