These prices have been gradually reduced on the website in recent months. I can only assume that they are planning on some new stock for winter. RRP is up to $59.95 - but the street price in their clearance stores is normally around $29.95.
I am aware that some styles have a very small size range - but there are over 100 styles - hence if you are interested, you will find most sizes covered.
I know that the quality of Rivers clothing has been the subject of some discussion on these pages in the past. However, I have found most of their trousers to be of reasonable quality for casual wear. At the $10-$15 price range I believe they represent a bargain. Look closely and you'll even find a few $5 pairs! The site contains other 'bargains' (eg. Women's Jeans for $10) - so have a browse - but I believe for quality/price, the Mens trousers are the pick of the bunch.
Postage for me (Sydney) was $8.80 for four items - free if you buy over $100.
Hah, BAD PANTS.