I think it would be more standard to regard an item that is never sold as not being relevant for market mechanics.
But on the other hand if one doesn’t sell for any finite price one could argue that revealed preference would need to be infinite.
I think iti s popular to assume that all items in a finite universe are within a single Archimedian class ie that for all items there is some finite R so that R x dollar triggers a voluntary exchange.
I think it would be more standard to regard an item that is never sold as not being relevant for market mechanics.
But on the other hand if one doesn’t sell for any finite price one could argue that revealed preference would need to be infinite.
I think iti s popular to assume that all items in a finite universe are within a single Archimedian class ie that for all items there is some finite R so that R x dollar triggers a voluntary exchange.