Anyone in Bent County get an offer?

Hi. I'm new to the group. My parents have mineral rights in Bent Co. and they got an offer today. My dad wants to know if it's a good offer. $125/acre signing bonus and 12.5% royalty. Sounds awful to me...I'm in Fort Worth and currently have an offer of $3,600/acre and 25% royalty. The agent is rushing them to sign...which always makes me suspicious. Can anyone help me evaluate this? Any help is greatly appreciated!