3D printing cost per part is dependent on a multitude of factors, including design, material, process, and post print operations. Typically, the post print operations account for most of the part cost, especially if manual labor is involved. In general, the laser powder bed sintering processes like SLS and MJF are the most optimal economic choices for end use parts if cost is a key factor. Check out this blog post to better understand what drives the cost of 3D printing.