The answer is like most things, it depends. 3D Printing is not expensive for small things that are in the 1-4 inch range. Typically that size can be anywhere from $5 to $30 or so.  That is price range that we find most customers are expecting. Pricing goes up quickly though as the size goes up. 5-10 inch items can take many hours to print and the price quickly spiral up into hundreds of dollars.