It's $70. Figure that compared to a box of ammo and a trip to the range, for starters.
I have 25 yds exactly from the garage to the barn door. I can bore sight, but this is faster. Besides which, .458 cal I get parallax on the bore sighting. .223 cal. I can't see down the bore to figure out where the target is on the barn door.
As noted in the instructions, sales pitch -- Useful in the field for a fast "zero check" on your optics. Besides which, it's a Leupold, and what's not to like about a kewl aiming gadget with grids and lights?