Hi Angela,
I've been trying to find useful information for you. You may have found some of these in your own quest. One company name that comes up in many Google searches is Hancock's, but the cost is about $40(ish) per pound.
There are several threads
here at Permies talking about pinto peanuts. And, there is an interesting
thread here at permaculturenews.org that may be worth looking at.