My experience is that you have to be very careful with unsolicited offers. I’m not sure if this is Universal Royalty Co’s practice or not, but many just go through the tax rolls and mail out offers as quickly as they can to as many as they can.
When you call back, they’ll go okay I better take some time to figure out what you have. The next offer is often much less. It is a bait and switch tactic. The company puts out high offers to see who is interested and then they do the real homework. I have personally spoken with people who will get an offer like this and then when the real paperwork comes in it is 25%-50% of that number.