Zazzle is doing an awesome discount on t-shirts with a really irritating deadline. Four hours.
Order a t-shirt in 4 hours and get 50% off, order this weekend after that and get 20% off.
So if you're quick, and you've played in my Mythrus Tower campaign, grab the Erol Otus campaign t-shirt fast. The link is http://www.zazzle.com/mythrus+tower+tshirts
That brings the price down to about $15, which is cheap. Sorry about the short time frame. The coupon code is OCTSHIRTFFHS