Fantastic responses !
Yes, My thoughts is almost the same off all of you.
The posted question is about "how buy could be less expensive than rent" ski/.boot/pole.
And yes, I agree, after few days you'll probably realize that purchase should be a great deal. Even not selling it after season end.
Boots... A bootfitter work is mandatory!!!
Well, I've skied with rented boots since first time. Big problem for sure.
It's very common to get a "junk" painfull feet at the end of a day of ski !!!
BTW, It's good to know about your concerns in this matter.
I can say that my ski level is intermediate, maybe 6 to 7(optimistically!!). I've never used a boot with fit, alignment and footbeds. But, can figure out that it should make a huge difference.
But, unfortunately for us, International fly with ski and boots is normally a problem and cost+++. So, the solution should be to try to resell at the end of the trip. But... c'mon it cannot be so easy...