Most beautiful I saw sold for 4000USD (no playfield wear, nice cabinet and nice BG).
Worse I saw sold for 450USD (cabinet repainted, steel side bar, dead BG and playfield for parts only).
I got mine for 2500USD after 2 years for research and I was very lucky to be first in line for this one.
Average price for a correct machine is around 3000 to 3500USD.