Theoretically it's not that bad. I can hunt any tree in the woods with say a ten cranford steps, a set of heliums, a hand drill and set of bolts etc (all about a hundred bucks), a commercial saddle is about 200, or a fleece saddle DIY and cheap rch for say 50 bucks. ROS for say 60-80 bucks. 20 bucks in rope and 15 bucks in carabiners. Starting from zero with no diy i guess 400 or so? Or 300 with a ring of bolts. Not cheap, but not really worse than other mobile options, and cheaper than a crapton of preset stands. The problem is knowing how to spend that starting from zero, and in buying 500 different climbing methods, 6 platforms, and 65 different types of rope like some rope-totin' Charlie Bronson wannabe.