I think it will probably depend upon your own country situation. The UK for example has a complete order book which would imply prices will be high for a long while - that said, there will come a point when there are sufficient used ones, coupled with people dropping out, that the price will start to fall. I think there are some countries within Europe however where the order book is still considerably less than a year - then I would foresee prices start to fall, if only slightly, within 6 months or so for used examples.