I kinda figured that you're looking at $5.00 per quart of Mobile 1 at walmart. $20 for the filter. $15 for the wrench for the 1st time.
$5.00 x 10 = $50.00
$20.00 x 1 = $20.00
$15.00 x 1 = $15.00
--------------------------
$85.00
But its well worth doing. Of course, I say this not having done it yet. But the way I see it, if I do the oil change once every 10,000 miles (manual recommends every 15,000 miles) its certainly well worth the money.
Since I pay 30.00 per oil change every 3000 miles at Jiffy Lube and $30 x 3 = $90.00 for the same amount of miles on the boxster, its actually cheaper to change the oil on the boxster.
Just my logic I guess. That and I really don't want to spend $200 for an oil change at my dealer. Besides, I only put 3000 miles on the boxster this past year. I guess this means if I go by the book, I'd do an oil change every 5 years?

Lets see if that flies.
JBG