I have posted some pages that include 'catalog value' herehttps://stampsmarter.org/learning/a...railers.html
NOTE: The values on those pages would be about right for an insurance valuation. In other words, like most catalog values, these do not reflect market values. I would guess that what a dealer would pay is a fraction (10% - 50%?) of the values shown. And if sold as a group, I think that the market values would also be in the 10% - 50% range.
I forgot to previously mention that Leaders and Coils that include line pairs/line stamp tend to command a premium.