What people ask for a stamp is not the same as what people will pay for a stamp. Folks, especially those who are not experienced, often list stamps at stupid prices. HipSTamp, eBay are typical examples. Even filtering the listings to view only 'sold' listings can be misleading since some reflect fake sales.
In terms of value, it is best to post about 8-10 images here that represent what you inherited
, and the community can help you understand what you have in terms of value. Please note, the vast majority of stamps have market values in terms of pennies. Even the very old ones were printed in millions (and even billions). Another good measurement on what you may have is how much your relative originally spent on the stamps. If they were millionaires or spent VERY large amounts of money on them than chances are good that you have something of significant market value.https://stampsmarter.org/features/H...fiersUS.html