Allegany County NY Mineral Rights Etc

What Are The Mineral Rights In Allegany County NY Worth? Has Anyone Heard Anything In Regards To The Sothern Tier Allegany County NY Area For Leasing Etc? Someone Has Approached Me To Buy My Mineral Rights...What Are They Worth To Sell..Im In Allegany County NY..Should I Sell? Or Hold Out For Leasing?

Probably don’t sell but how much did they offer (it was probably low) and how many acres do you own?