Monster Menagerie, Flee Mortals, and Trials and Treasure- ttrpg books to get

ONES TO GET:

 Monster Menagerie and Trials and Treasure together
Those 2 books can run the whole 5e game alone, they say (SlyFlourish I think),

Flee Mortals … monster book is great, i want it  

Kave 2… has d100 lists

UPDATE, RELATED: 

https://a5e.tools/rules/designing-monsters

https://a5e.tools/rules/monstrous-menagerie.

I do like this older(?) cover art. ebay $85