The "just upload a design and collect money" narrative is not wrong, but it leaves out the parts that determine whether you actually make money. Here is what the ads do not tell you.

What Print-on-Demand Actually Costs

The platform takes 30–40% of revenue. A $25 t-shirt nets you $15–17 after platform fees and product cost. Your margin is thin until you have volume. Design tools are mostly free (Canva handles most needs). The real cost is your time and the ad budget you will need to drive initial traffic.