Hey! Thanks for the kind words. It is often difficult to determine price - since the cost involved with the actual printing is very subjective. Many people charge a lot for the skills needed to operate the machine - along with the time used on the printer. The actual material being used also can change the costs involved, since some strong materials cost 4x as much as the cheap PLA used in this video (and are harder to print with as well).
But if you are to do this yourself and not pay someone else to print it for you, the cost is very little. I used PLA in this video (inexpensive material) and a part like that is only 30 grams. A 1KG spool of the material costs $15. That means that little blue boat only actually costs about 45 cents. But that same blue boat might cost closer to $10 or $20 if you paid someone else to do it for you, due to them charging for their time and their printers time.