Welcome to the forum.
If your name and contact information are properly filed in the County Courthouse where the minerals are located, land men will find you as the speculators already have. If you are getting speculators for buying, then they are usually ahead of the bit and tend to be lowball to start with. Take a breath and see what a few weeks bring.
I have got offers from EOG, Paint Rock and Infinity Natural Resources. Has anyone else received offers that I can see if mine is competitive?