We only paid $56 for ours brand new, but went halves with SIL so we share it between the families but have never both needed it at the same time, we got it from a big baby store, but they aren't in QLD, $100 is ridiculous, maybe you can see if they will price match?
Also look on Gum Tree, someone may be selling one locally, that you can pick up.

DD2 loves it and DD1 still like to sit in it