They all have that dent at some point! Comes with the territory ..
A photo would help , and a good guide has to be evil bay.
This can give you a rough guide .
Depends really .
Bling doesn't really add much on unless you have a nice set of cans.
My carbie 99 was £1300 with a ding in the tank but really it could have been cheaper with the others bits that let it down .
However it had been lowered a bit which swung it for me.
Also colour ??? Red is the most popular it seems.
Yours injected isn't it?
That will add a little more
600 's go quite cheap to be honest .