Dropped by my local dealer last week to pick up an oil filter, the parts guy showed me the "Porsche" oil. He said cost for enough to do an oil change was about $115, by way of comparison a case of BP (from a distributor) is around $70 (note Canadian prices). The can is quite nice and many are buying it to have the can on display on their shelf. Also claimed the oil is actually made by Porsche and is not repackaged Motul, Mobil, or BP etc (he works at a dealership so he should know
My take, the can is nice but not for $50 over my BP, having said that I'm sure they'll sell.