"SkiTips from the Devil"
It's my understanding that instructors get paid a pittance more for private rather than group lessons unless the student specifically requested the instructor. Even then, it's not like the instructor is getting a windfall. Perhaps an instructor could enlighten us to the economics of the situation, but if you got good value for the service rendered, it seems only reasonable to provide a tip. YMMV.
PS. I've got a group of guys I ski in group lessons at Breck with. It is my impression that we tip reasonably well, as we generally get the instructors we want to ski with, and they seem eager to ski with us. In other words, treating people with respect (e.g. money) tends to get you better service.
Wow, $600 bucks for a lesson. I wouldn't have the heavy mental anguish of whether to tip or not - no way I am paying $600 for a lesson.
Me too iWill, tips here in the PNW inland were nice and sometimes reaching $5.00 for a private. When I taught at Tahoe got 20/40 and once a 100 dollaw tip but not up here.
If someone is paying $600 a day, you need to go to an ESA event mucho better deal.