Well, a Haro X2 with all the changes is still only worth what a Haro X2 is worth now.
Many people upgrade bikes thinking that it will be more valuable. Keep in mind that a $100 part at retail might only cost $15-25 at factory level, and that many upgrades are far above what the bike should have. This means that the bike is probably used for something it wasn't intended to do and may be worth even less....
