I have no idea; as I said, my expectations are just guesses based on broad principles (slow planes are cheaper than ultra-fast planes; clunk planes are cheaper than ultra-maneuverable ones; machines whose failure do not immediately kill humans are cheaper to make than machines whose failure do entail human death; the cheapest, lightest, and easiest to maintain machine parts are the ones that aren't there). You should ask Rolf, since apparently he's knowledgeable in the topic.