Produce Co-Op

Has anyone heard of a produce co-op where you get produce from a local (within 100 miles) source every two weeks?  I went to the farmer's market in Logan last week (Saturdays from 9-1 at Merlin Olsen park) and found a Logan Co-op.  I believe there is one in Brigham also.  Anyone have any information or experience?  Would anyone be interested if I found more information?