Unfortunately selling modded vehicles is very hard to break even on the mods unless someone wants exactly the same mods you did which is a little unlikely. I'd say look up the NADA value(this is what dealers use now) and mark it up 1-3k. I'd mark it up 3k and just be ready to haggle some. Like Ben said, you can only count parts, not labor in your total cost. How it gets on doesn't matter, only what the kit is worth in the end. And I wouldn't include wear items like the battery or wipers, I would add tires tho obviously. The battery and wipers are just a perk
"You didn't buy it to look at it!"
2000 TJ Solar yellow, 3.73, 178k, limited slip D44
2012 GMC sierra crew cab--Daily Driver
2008 jk X 6spd Red Rock---Sold and missed