3D Pen/3D Pen Filament Refills sells on Amazon. I think the price is very good. Please read some of the reviews and see what people thought of the product. Do check how you might qualify for a free shipping offer if available.

  • 【FANTASTIC GIFT】 3D printing pen is perfect gift for kids to create 3D masterpieces, It can help children improve their spatial thinking and develops creative ideas. It’s also a great educational toy for parents and children to spend quality time together.
  • 【EASY TO USE & MUCH SAFER】 Featured with one button control for drawing as easy as writing, simply plug-in, heat up, automatic feed and extrude.Great for beginners and experienced artists/ 3D enthusiasts.
  • 【ADJUSTABLE TEMPERATURE/SPEED】You can use the buttons to control the speed and temperature as you like, and find the way that suits you. LCD screen lets you monitor temperature of material and extrusion speed when you enjoy drawing 3D model.
  • 【HIGH QUALITY 3D PEN】 3D drawing pen is made of eco-friendly ABS material. It is equipped with 12 color PLA filaments made of non-toxic and non-irritating green material. You can use it with peace of mind without worrying about environmental pollution. The dual heat dissipation feature at the nib prevents you from getting burnt during use. Buy with 100% confidence.
  • 【NOTE】After finishing using, please draw out the remaining Refills, and store the pen and wire separately to prevent the Refills from blocking the pen .We support 1 year replacement and 30 days money-back warranty. And send by FBA.