I found a company that make silk screen shirts pretty cheeply. I wonder should I offer these on my website. There is another place that make all sorts of stuff, cups, buttons, stickers..... is this what I want?

I can of course manufacture these myself: get screens, get product... etc. or get an iron, get product.... etc. Is this what I want to do, it seems all very labor intensive. I am not sure I can handle manual labor anymore.

It's cool to see my design on a product. But is this what I want to do to make money. I fear I would work very hard for very little.