Price range for used toda 4-2-1 header?

I’ve decided to look around for a used Toda 4-2-1 for my '93 B17a. I haven’t seen that many used ones around and was looking for information on what a fair price range would be for a used one. I realize that many factors such as age, scrapes, etc. affect the price. However, I’m only looking for ballpark ranges. Something like “$650-$750 is fair for a <2 year old good condition header”. Or comments such as “I got my used one for “$500” w/no scratches” would help too.

TIA,
Randy
Vancouver WA

i usually see them for $500