That's why I posted the link...the original poster is/was looking for 1 for a long block. At that price, I'd wait.
Vintage speed equipment isn't cheap, sure there are deals occasionally. With more people getting into it & less of it available, the prices keep going up. I'm sure a lot of the guys who have been around a long time have stories, getting this or that for $10 & now that same part sells for $500+....maybe 50 years from now, their son or grandson will get $2500 for that same part. Another example of supply & demand, pay to play, etc.