Binary Fortress are having their Black Friday / Cyber Monday sale on DisplayFusion and a range of their other applications. While 50% off isn't the cheapest it has ever been, this doesn't go on sale all that often.
DisplayFusion is a well rated muti-monitor desktop management utility. There are a lot of cheaper or free utilities out there, but DisplayFusion does pack a long list of features in.
Sale includes:
DisplayFusion Pro Standard (Single PC, Lifetime Licence): $14.50USD (~ $21.39AUD)
DisplayFusion Pro Personal (Unlimited personal PCs, 1 business PC, Lifetime Licence): $22.00USD (~ $32.45AUD)
Other products also on sale:
Clipboard Fusion
Fileseek Pro
iTunes Fusion
Log Fusion
Tray Status Pro
Voicebot
When purchasing DisplayFusion you're given the option to purchase the above utilities at the same time for an even greater discounted rate during checkout (e.g. Clipboard Fusion $3USD).
Displayfusion is worth its weight in gold. Must have for multidisplay.