Combination wireless keyboard and mouse
A mouse will set you back $10-$15 so this isn't too bad when it comes with a keyboard too.
Save a further 95c if paying by Warehouse Red Card
Looks like it might be online only - can anyone confirm if it's available instore? Also seems to be limited to one as if I update the quantity to any more I get an out of stock message.
Next cheapest price according to pricespy is $44.85 from PBTech