Aussiebum are having an end of year sale, with some decent discounts across a good portion of their underwear range with a bit from their swimwear and loungewear range.
If you've not bought any of their stuff before, it's well worth a look especially with some of the prices as they are now. The fabrics are excellent quality, the products are all made in Australia, and there's a wide variety of styles and colours, ranging from the everyday to the rather strange.
The cheapest are in the Property Of Briefs range, at AU$9.25\pair (same style but in trunks are $9.75), next would be the Classic Briefs range at $10.25\pair.
Also included in the sale are some swimming trunks, singlets and some loungewear.
There's a good variety in stock for all sizes except XXS (nothing) and XXXL (only two styles). The sizing does tend to run a little small, though, so you might want to double check the size chart and maybe order a size up if you don't like tight.
Free regular shipping in Australia and worldwide as well, although this seems to be a regular thing with them.
I agree that people should go one size up.
I rate the quality of this brand and when it's on sale I think the price is about right. Personally a bit to much emphasis on meat and potato on the site though…not that there's anything wrong with that.