The market will speak. But as we all know building a bike its easy to over capitalise, just like a house, just because you spend the money on a pool or your taste in furishings, it means nothing unless the buyer has exsactly the same taste. Same goes for cars and bikes. The market ebs and flows with whats in and out , and also what is fair money on any given day. As the thread has indicate some folks dont like certain aspects of the biek as it is, the pipe has been mentioned, but Ajay may love it and spent a fortune on it, alas that means nothing unless the next buyer loves it just as much.
Price is alway subjective, but if you where to back out the costs such as a standard Tm 400 motor and other consumable parts the only special part is the frame and even that is set for only a certain less desirable motor. IF it was a yamah frame or similar id put my hand in the air fast as the next guy, but its only really in the relms of interesting. IF the bike is special only due to the bvalue of its frame you would have to build the price in around that. so whats a Frame like that worth $1-2k ? then maybe if its matching tank stick on another $1k so your round the $3K ? now add in all the other consumable or costs to build that are recoverable costs and id say $4-5k would be more like a steal IMHO.
Its only worth what someone is willing to pay on the day, the day isnt over, and maybe the buyer hast seen it yet. but there is always another day and another bike that is right for you. this one isnt just right yet for someone.
Im as guilty as the next guy for paying to much based on the market, but i live by the rule if i like enough ill pay what its worth to me, thats my yardstick. im paying for my emotional connection to it what ever that price is, if im buying it to move on then i use another formuala based on floor price etc. currently on the modern YZ series we have been using the year less a grand as the trade in value, no reason, just that it seems it works, as in an 06 model is $5k 07 model $6. how long that last is any guess until the market again changes and its the year less $2k :O) or some other stupid line in the sand.
Meh...... good luck to whoever buys it, if they buy it for the right reasons