for the price above, I have a complete set 60 volumes of Britannica great books series. Timeless, and retains its value, unlike out of date encyclopedias.
Separately, or in addition to the price above, I have a complete set of Britannica Annals of America with first hand first person documents throughout American history. That one is about half the price of the great books series.
These are great looking leather or leatherette hardback books for your library.