Use your free trial to order a few samples, publish lots of designs to your store, get a feel for how the app works, etc. After that you will be charged the equivalent cost of ONE T-shirt per month. You just need to sell 2-3 shirts to cover this cost.
The base cost of each T-shirt is just $6, including shipping.
If you opt for fast international shipping, an extra $4 is charged per shirt. If you opt for the slower shipping method, the price stays at $6.
Since $6 is the lowest posttible cost of a shirt, we would lose money on each transaction from processing fees. That's why we charge 3% + 30¢ of your daily total each day.
If you want an extra design in the back of the shirt, and extra $1 is charged.