You don't need Legendaries in Zoo at all. So that's the "cheapest" deck to build, depending on how many cards you still need. You can make 16 rares for the price of 1 Legendary.
HandLock (I assume you mean) is also not dependent on Legendaries, with with the Leeroy-combo no longer usable. It's more expensive then Zoo though; Mountain Giant, Molten Giant and plenty of rares are needed.
example 1 ( giants) between rare/epic card ; azure/twilight drake , 8/8 golem (red,white colour) and legendary as windrunner or alexastra
example 2 (zoo) between rare/epic card ;knife jugger/doom guard and legendary as leeroy or blackknight
what choice it better for me that have a limit budget (mid budget )
thank you
giant that i mean is mage . i am so sorry
thank you