Knitting is a hobby… and like any hobby, it can get expensive…
what needles? ANY needles… cause eventually you are going to own at least one set of all of them…
there are wood (ebony, and rose wood and birch + exotic woods) and bamboo.
there are metal (steel, coated steel, Brass (coated with nickel) bronze, precious metals (gold & silver!) and aluminum…
there are plastic, (soft and hard, and milk based plastics!) there are nylon and teflon needles.
there are glass and other materials…
and all these needles come in DPN’s (in several lenghts) and Straights, and Circs (and some in interchangable circs) and these too come in different lengths.
there are matched sets to buy, and individual needles to by.
there are needles with interchangable tips… because sometimes you want a dull tip, and sometimes a medium tip, and some times a stiletto tip… (aka Lace tips)
I learned on metal (the most common style of needle when i learned) --and i hate bamboo (wood is ok… but…)
after 47 years of knitting, you’d think that would own all the needles i need–but No, I am always trying out new needles…
in some ways, I am always a beginner!
try out every needle you can (many LYS have a needles and some yarn to ‘play with’ and NO matter what you like now, be assured,there is always a “new” needle that is crying out to be bought and tried!