Big W has a range of sets marked down to what they are calling clearance prices. Overall the discounts aren’t incredible, but they do have the 20th anniversary Slave I for just $99.
I’ve heard a few people mention that they can’t see the $99 price for the Slave I so I apologise in advance if you can’t see it. It seems to be related to your local click and collect options.
Thanks to Alyssa for the heads up.