well, first of all its not a tree house. its a nice los angeles A frame.
second, compared to regular houses its pretty cheap. 100k $ for a 88 sqm is pretty nice.
with that price, i dont have to pay mortgage for the rest of my fucking life. this way, i can actually enjoy it and do whatever the fuck i want.
third, i want to put it on my 1800 sqm land where i have a nice swimming pond, a huge ass garden, will add a 20-30 sqm balcony to that house and listen to the birds singing while having a joint. i will literally life my personal paradise. :-)
will invite you for a swim in summer or snowboarding in winter ... you will see what i mean.