Spring Cleaning Sale - tees from $9 @ Threadless US site !!!!!
They are a US company, which sells unique tee shirts. This is their spring sale, in which many t-shirts have been reduced to $9. Some are a bit more expensive, being up to $15, but there seems to be a wide range for the $9 price.
Shipping is a little extra to Australia, but I think it's cheaper the more you buy. e.g. 1 tee = $15.54 inc del, 2 tees = $26.08 inc del ($13.04 each), and 3 tees = $36.61 inc del ($12.20 each).
UPDATE - use "digg3prize" voucher code to get an extra $3 off your order. (Thanks thedreamer81!) - EXPIRED
NEW UPDATE - use "springoopscleaning" for $3 discount! Thanks funkyblue!