Just spotted this on Crocs Australia's website. Apparently there's a 12 hour flash sale started at mid-day today and finishes at mid night. 20% off when you buy 2 pairs, 30% off when you buy 3 pairs and 40% off when you buy 4 or more pairs.
For new customers you get 20% off anyway for your first pair. You also get free shipping on $50+ spend.
mis-spelt crocs in title OP :)