Green’s Dictionary of Slang

(Aus./N.Z.) money.

1936		Truth (Brisbane) 19 Jan. 2/7: Jim knew his job and sent his cobbers in with bundles of oodle to back the gelding.
1939		Truth (Brisbane) 22 Jan. 3/1: There were bundles of oodle for Proceed and Corlnya.
1941		Baker Popular Dict. Aus. Sl.
1955		N. Pulliam I Travelled a Lonely Land (1957) 237/1: oodle – money.