In the UK Porsche market here is a bit of a tale of quite a few folk sustaining losses relative to Sale or Return contracts (SOR) at one particular dealership which seems to have gone rogue. The scale of it seems quite amazing, and the likely outcome for all those involved seems rather bleak, as the only folk who seem likely to profit may be the legal and financial teams involved in the processes.
There were a lot of in`s and out`s, twists and turns discussed, and it springs to mind that at least one chap had insured himself against any issues arising relative to the SOR contract...?

It seems SOR issues are none too uncommon, perhaps best to read and understand whatever contract you sign on to CAREFULLY...?