There are several ways in which you can cheap tshirt printing which include a heat press, a vinyl cutter or inks, dyes, and screens. So, with a heat press and a vinyl cutter, you would be able to print the t-shirts with transfers on them.
This is a good option if you are just putting some words on the t-shirt. You can even try the screen printing method, in case your style is crafty as well as artistic.