The mother lode

[BCA]

Market prices set by a few eBay sales are hard to comprehend. Lucky to those who appreciated rarity of Carrier parts in the past. So prices will change.
An old surplus dealer told me: He always charged what the Law of Supply and Demand dictated - after all he had to obey the Law.
At the same time eBay buyers are just "buyers". I prefer to deal with "customers". There is a big difference.
....... Brian