It may have already been posted, but just in case anyone missed it a Detectorists DVD set with all three Series plus bonus material came out a couple of months ago on Region 1 format(USA & Canada). It took long enough.
https://www.amazon.com/Detectorists...coding=UTF8&psc=1&refRID=B6QBWHCXCQ18K72ZCWXJ
https://www.amazon.com/Detectorists...coding=UTF8&psc=1&refRID=B6QBWHCXCQ18K72ZCWXJ