Mucky Nutz is having a 50% off sale for end of line mud guards. It's a cheap piece of plastic that works great at stopping crap flying into your face if you're into mountain bike riding.
Here's a review for one of the discounted items:
http://www.bikeradar.com/au/gear/category/accessories/mudgua…
Ordering from the UK, you get the ex-VAT price.
I personally ordered these:
Bender Fender XL for 4.58GBP ex shipping
Bender Fender for 3.75GBP ex shipping
Shipping cost seems to be based on weight. For delivery to Sydney, Australia, both items above was delivered for 4.00GBP in total.
Assuming you buy just the Bender Fender XL, at 8.58GBP incl shipping, the AUD cost is ~$15.20AUD at today's conversion of 1.771AUD / GBP.
In comparison, it costs $23.99AUD delivery from Torpedo7 ($14.99 + $9 shipping)
http://www.torpedo7.com.au/products/NWMUFNNXB/title/mucky-nu…
I have bought and used one. Fantastic product. It's true though that you can make one yourself out of those 3L milk bottles.