First of all, a 3D Printer is for the one who knows 3D designing or the ones willing to learn.
Modern-day lifestyle demands for more, hence we have to be more efficient and effective.
3D printers are the best way for getting your ideas into rational scalable products. Designing as well as fixing the body ratios will take considerable knowledge but in contrast, it is easier than building clay models from scratch. The reality is 3D printed models are more simplified as computer-aided designs are geometric in nature and clay models aren't.
Industrially speaking, 3D printed edifices are used in the automotive, tech, medical, cosmetic and even the jewellery industry; which signifies that if you buy a 3D printer and learn how to design your own products, you will be able to get your idea work in pretty much most of the major industries or maybe even get an investor to get serious with your product. In most of these industries, 3D printing on a whole is used to build the prototypes or maybe even minute parts. But sometimes, even the majority of the product is made out of 3D print. A great commercial example of this is the Adidas Futurecraft 4D which is apparently more comfortable than the shoes with full-fledged rubber soles.
The crucial advantage of 3D print material is that it is relatively lightweight and is particularly cost-effective.
The explanation for the purchase of the printer at this period is presently the technology hasn't developed too much and is affordable as an investment. But, to keep in mind is the fact that there are different categories of these printers starting from the most common home-used Fused Deposition Modeling (FDM) to chief complex industrial level Direct Metal Laser Sintering (DMLS).
Ultimately, according to the capital, effort, and time, the printer will get upgraded as well as the knowledge of the designer and 3D print will be a good profit.