That's what building my bike cost me. Perhaps a bit more. I didn't keep all the records but roughly. And of course no labor time included. And the paint job cost me nothing. I had lots of extra expenses which an average person would not have, so perhaps it would be around 7k for someone with a garage. That's why I didn't sell it for 9k pounds when offered. And not just that - it's been too close to my heart.
I think that recently posted deal of the two bikes for 10k USD with extra parts that just got sold was a sweet deal. I wish I could afford it.
Good luck with your progress!
1982 Kawasaki KZ1300 A4
1981 Kawasaki KZ1300 A3
assembling engine, chassis & electrical from 79 - 89 parts