Mineral Rights in Reagan Co., TX

I own 1.36286201 nma in Reagan County, Tx. Legal: CCSD AND RGNG SEC 1200 A-350 RRC 18064
TURNER RANCH I have an offer of $11,000+ ($8,000/ac) Royalties are $72/yr. Is this a reasonable offer?

Its a reasonable offer. However, it is a hot area with lots of permits and drilling, so you may be able to get more for it.