The correct US spelling is "thirty-four dollars." ($ 34.00)
You spell 34 dollars like thirty-four dollars.
thirty, thirty-one, thirty-two, thirty-three, thirty-four, thirty-five, thirty-six, thirty-seven, thirty-eight, thirty nine, forty
Thirty-four
Four hundred and thirty-five
Four hundred and thirty-eight
Vierunddreizig.
Thirty-four dollars
Thirty four
Four hundred and thirty or Four three zero.
Four Hundred Thirty-Four Dollars
Thirty-four dollars
Four hundred and thirty nine.