I know a high end dealer who has no pre owned inventory but for special pieces and clients will make introduction to an interested party. Lange can do the same and make two customers happy at the same time.
To be honest - the bundle deals, "boutique relationship" requirements, etc are the things that disturb me much more. Read the comments, not only here. Lange under Mr Schmid comes along as really arrogant, very different from the earlier days. Maybe it is a communication problem rather than anything else. But there is something to be worked on.