A few good cheapest 3d printing service images I discovered:
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3D Printer Testimonials
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Clear resin supplied by Formlabs – available in 1 liter bottles. At 150 USD per bottle, the resin doesnt exatly come across as cost efficient but comparing it to what I would typically pay external solutions then this is truly regarded as inexpensive. For the amount I can print with a liter of resin on my Form1, I would have to spend an external service about 250,000 yen.
The bottle subsequent to the resin is Isopropyl alcohol that is required to wash the 3D printed components. People in Japan can get some from Tokyu Hands or Rakuten. You would need about 2 liters depending on the size of your print object.