I want to start a marketplace for nail artists to upload their designs which can be purchased by anyone and 3D printed at the nearest facility and sent to them. Is this idea feasible?
Yes dear you can initiate this venture without a big marketing and advertisement budget. This era is of digital marketing and DM is much cheaper and result oriented as compare to conventional marketing; you can hit you target market through social media channels and can drive these people to do online or offline shopping of whatever you offer. Lets start this now, don't wait, otherwise someone can steal your idea.
You can call me for follow up questions.