think about it like this. Most of your parts are second hand. Wheelset, Cranks, frame, bars, etc. It doesnt matter if the person you bought it from says its like "new" the parts are still previously owned decreasing the price. you can get a bmx for around $1000 that works and feels just as good as this with no parts that have had 2 or more owners. not trying to troll just stating the facts.
doesnt change the fact their twice used. Think of it like this, your going to buy a used car off a guy thats had a previous owner and the car brand new is $30 000 and hes selling it for $29 000. Would you buy it for $1000 less when its had 2 owners before you and when you can go buy a brand new one for $1000 more