[Perfectlap]

^ I went down that road once too. As soon as those private upholstery shops see a Porsche coming up the driveway they see dollar signs. I honestly think paying the $700 for the leather might end up being the cheapest route.
Even with my last convertible I was shocked how expensive some of the quotes for installing aftermarket leather seat covers were. Assuming they have to do this task quickly at the factory/assembly line, how time consuming can it be... it's not like a custom job or anything. Everything is pre-cut and measured already.