Thanks to Being Askhole post for pointing out that Officeworks has the Logitech Z623 for $95.
Overview
Logitech® Speaker System Z623 delivers 200 watts (RMS) of power in a THX®-Certified system—for big, bold audio. Multiple inputs let you connect your music, movie, and gaming devices.
Key Features
THX® Certified
You’ve got quality you can count on—these speakers have met strict performance standards to achieve THX certification.
200 watts (RMS) of power
As loud as you want it. You’ll hear—and feel immersive audio that brings music, movies, and games to life.
Multiple inputs
Make everything you listen to sound better with convenient RCA and 3.5 mm inputs for music, movie, and gaming devices.
Powerful 2.1 system
Easy, two-satellite setup and a powerful subwoofer give you big sound—even in large spaces.
Integrated controls
You’re in command—dial the volume and bass up or down to customize your listening experience.
Built-in headphone jack
When you want to listen privately, just plug in your headphones.
Original PLUG 5% off Sitewide on eBay Deal Post
EDIT: If you have an eBay UK Account, you can use the coupon code 'PERKS' to purchase the Logitech Speakers Z623 for $85.50 (Credits to O O)
Good speakers for the price. Just pulled the main satellite apart on mine to clean the fickle power switch inside, and it works flawlessly now. Would recommend if you don't mind spending half an hour with a YT tutorial and getting your hands a bit dirty if your unit ends up the same.