OMG!.......Lucky they're Rare!   

http://www.ebay.com.au/itm/1978-SinBad-Pinball-Machine-from-Gottlieb-D-Co-RARE-/252273342966?hash=item3abca9b9f6:g:ma4AAOSwa-dWrvp6

http://www.ebay.com.au/itm/1979-Count-Down-Pinball-Machine-from-Gottlieb-D-Co-RARE-/252273339237?hash=item3abca9ab65:g:2~cAAOSwKtlWrvk8

http://www.ebay.com.au/itm/1978-Last-Lap-Pinball-Machine-from-Playmatic-RARE-/252273346867?hash=item3abca9c933:g:0FsAAOSwFMZWrvxe

http://www.ebay.com.au/itm/1977-Jet-Spin-Pinball-Machine-from-Gottlieb-D-Co-RARE-/252273335732?hash=item3abca99db4:g:nhsAAOSwnLdWrvdR

From that list - "Last Lap" is rare. But is "Raven Rare" - in other words, it is rare because it is junk. But there are some games with higher production runs - "Hard Bodies" - an example of a game that is rare because they were basically all parted out - they made no money onsite. "BMX" is the same layout, but a better theme. Only 406 made - that is a rare game.

Just looking at those auctions - I can't wait to see other sellers quickly find the same titles and list them at similar prices. Yes - this is now their "market value" !