[W2C] Cheap plain t-shirt for self-printing project

Looking for the cheapest, but still semi-quality t-shirts for a self-printing project. I'm going to print some self-made designs on these t-shirts and sell them to a couple of friends as a hobby. T-shirts has to be TTS and at least the option between black and white colorways. Prefer taobao, but if you have a better website for cheap basic tees, hit me up!

Thanks in advance, and have a nice day repfam<3