I used mine for almost 2 years with DD1 and about 12 months for DD2 - it was a lifesaver and well worth it in my opinion! However, some babies don't like it and some don't fit into them properly. See if you can try one before you buy. Also they do hold their value well so if you do get one you will always be able to sell it again on eBay!
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.
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