Surprised that this hasn't been posted yet! I thought a polo shirt for $3.99 was a pretty decent deal and the clothing I've seen at Aldi in the past didn't seem like they were bad quality.
There's also shirts and a two pack of singlets going for $4.99 which works out to about $2.50 a singlet. URL for the shirts and singlet is http://aldi.com.au/au/html/offers/2827_15113.htm?WT.mc_id=20…
good deal if you want something to wear around the house. might grab a few myself