You want a decent set of multimedia speakers, but you're not willing to spend more than $100? Usually this would involve a dastardly compromise... but not today. For Sunday only, Dick Smith has knocked $100 off the RRP of Logitech's Z623 speakers so you can grab them for a measly $99.
You can thank OzBargain user "theearth" for spotting the deal, which looks to be exclusive to online shoppers and only valid for today. The speakers weigh 10.2kg and the total dimensions are 32.4 x 45.8 x 33.6cm, so take those specifications into consideration while you decide where to stick the things.
The speakers usually retail for $199, so you'll be hard-pressed to find a better discount right now, let alone in the near future.