To install each 4x4 panel is around $250 in the garage ceiling. Depending on the garage ceiling clearance, many new homes have a 9’ plate on the ground floor the garage ceiling should be around 9.5’. In order for the suspended rack to be effective it should be at least 18”. Many builders ran duct work in the garage ceilings which may interfere with the rack locations.
I have seen a do it yourself version at Home Depot for about $80
I like a single story garage for the following reasons:
1) Attic in the pitched roof area for storage without having to come up with suspension storage.
2) Garage is the first place to fail structurally.
3) Never hear the garage door opener.
4) Room to expand vertically for a studio or granny unit later.