I think that mods add tremendous value TO THE PERSON DOING THEM. However, people have to remember, that the more they personalize them, the less room they leave for someone else to do the same. So the mods can actually be a detractor, unless you find someone who is looking for some of the mods you have as a quick head start. Things that are cosmetic usually add little value....performance a little more so....but again, all depends on the person buying the bike. I know that I wouldn't get the money that I've put into Bessie if I sold her, but personally, I plan on running her into the ground! Hope everyone is having a Merry Christmas!