Should I buy a drawing tablet to help me create designs for print on demand?

I am thinking about buying a drawing tablet/graphics tablet to enable me to draw/sketch designs the way I imagine them, faster and without the limitations of a computer mouse. Does that sound like a good idea?

Some context would be that I have created my stores (redbubble, teepublic) but have no products as they have yet to be designed and uploaded. I have access to a 1k interest free loan while I study that I could easily pay off by the end of this year if I choose to buy one . I'm just worried that I'm deluding myself into thinking this tablet is "the thing" that will make this store a reality as opposed to it's current empty state.

Any and all input welcome 🙂