Enerlex Offer in mail

Howdy all and thank you in advance for your help.

I have just been named executor of a friend’s estate. While going through his mail I found an offer on mineral rights on 2 pieces of land: 1 in Midland and 1 in Mitchell County, Texas. There are survey Blocks and Sections listed.

Enerlex is offering a few grand but in reading the paperwork it seems a bit shady in that they attached 2 drafts: 1 for $150.00 and the other for $3100.00 but of course reading the fine print there’s hooks, crooks, bends and legal confusion.

Now I’m figuring if they are offering these amounts what the rights are really worth and being the Executor it is my responsibility to get the best price possible for the estate.

I’ve Googled Enerlex and it seems this is their business so I’m not wanting to sign and run so to speak and hope for the best.

Any help would be greatly appreciated.