“Animals are such agreeable friends they ask no questions;
they pass no criticisms.”
“An animal's eyes have the power to speak a great language.”
Spicky, Albiano snake, White bat, Axolot, Armadilo
You can start juveniles in a smaller tank, but that does just mean investing in a larger tank down the line.
You should probably expect a decent tank to cost between $100-$200, though you may find something cheaper.