I've just ordered a frameless shower door -- specifically, a door and
an adjacent flat panel. The whole thing is about four feet wide (panel
and door) and 6'5" tall.

This is one of those ridiculously expensive -- but cool-looking --
shower doors that mounts with a couple of chrome brackets or "clips"
rather than the traditional channels.

After we got the bid, I noticed that about a third of the cost was
installation -- $500. So, I immediately said I'd do it myself. The
glass guy said OK, but did a lot of head-shaking and said, "We really
don't recommend that."

Has anyone installed one of these things? Is there some trick to it
that would justify paying anyone $500 to install it. I mean, you
measure carefully, drill and mount your brackets, right? Is there
anything I'm missing?

Mark