Things like tables I've generally felt to be of decent quality. Their kitchen fittings tend to be good enough quality to make it through their 10 year warranty.
Actually, speaking of warranties, I was just in an Ikea store in The Netherlands after moving here from the USA, and there was a large sign on the wall in the couch section proclaiming the 10 year warranty on all of their couches. So it seems they are trying to make some key products last.
I also bought some cheap plastic shelves with wheels for my new tiny Dutch bathroom. I don't expect the wheels to still roll in a year. I bought what I think it supposed to be a wire mesh "filing cabinet" (it's tiny!) to use as shoe storage in the entry way and I expect it to start rusting next year. But it was €20 and I just made an international move and money is tight atm.
You get what you pay for I think. $40 bookshelves? Not making it through a move. This model[0] however, will likely hold up fine. It looked sturdy when I saw it in the store last week.
0: https://www.ikea.com/nl/en/p/hemnes-bookcase-red-stained-lig...