RS are so much appreciated these days that....
Seriously it doesn't make any sense to sell it.
Those are like $200 out there... now, yours is used, has the steerer cut and you used it for jumping which is not like "pampering" your fork...
If you can get $100 out of it, it'll be darn good. You stole the guy 100 bucks.
The same for my cheap arse Axel....
In fact... I got the '03 because the '04 has a RS fork and a Deore Derr instead of the LX. Check the specs from the '03 and '04 Warps DS1... Giant downgraded the bike.