Not all climbers are gym rats.

A full set of say a dozen cams, probably $1000. A set of tricams ($100). A couple sets of good nuts (2x$150). A set of hexes ($150). About a hundred oval crabs (100x$15) and a few beefy lockers (6x50$). Say 24ish quickdraws (24x$30). A half dozen belay devices/eights for various tasks (6x30$). Ropes are about 200 each for 50-60m dynamics. Any serious climber will own four or more. Plus some static lines for hauling. A set of jummars (2x150$). Lots of webbing for connecting stuff. A few thinner ropes for anchors and general utility uses. A couple pulley blocks (2x100). Rope bags. Gear bags. Cleaning tools. And a hundred other bits and bobs. Every wall climber also has an assortment of strange stuff, things few people ever see two of, for particular problems. For instance I have an ascender rated to catch falls, which is a useful self-rescue device. Such rare things are priceless.

https://www.ukclimbing.com/articles/features/nuts_museum_the...

That's just the technical climbing gear for climbing rock. There is also all the camping stuff used when getting to or staying near the rock.

Then there is the box of aid climbing / bolting stuff. And the first aid stuff.