I see stuff offered on Craigslist for " free " all the time.
So much of it is just plain junk.
I need another bookcase because many bookcases are those pressed sawdust crap & one of my bookcases broke 2 shelves because they wouldn't hold the weight of heavy books because the pins are either too short to hold up the shelves or they're made out of plastic and won't hold them either.
So now I saw an ad for " free " bookcase. Went down and took a look at it. Base is rotted from water damage. Can't use it. So I took the shelves and the plastic brackets to hold up my shelves until I can buy a drill and drill holes and run metal rods through the side of the shelf sides to hold up the shelves.
I did find a company that sells nice wood cherry shelves that will hold up 150 pounds per shelf. Mac books are thick and heavy. You get what you pay for and like some " free " help from othe people ( not TC ) you get what you DON'T pay for.

Will post the link for that site later.
Have to listen to Noory video with Dr. Doom and do new video.