TIL the outrageously ridiculous price of retail 3D Pen filament

Cherry Pie by Billie Ruben: Recycled PET-G – GreenGate3D

Cheap PEEK - 3D printing Filament by Grayson Galisky — Kickstarter

New 3d pen playtime. Does the filament always bubble and spit, or

3D Printing Pen - The Virtual Foundry

3Dgenius 36 Colors 3D Pen Filament 1.75mm PLA

Safely introduce your kids to 3D art with this 3D pen, now just

Best Buy: 3Doodler Create 3D Pen with Included filaments Shocking

(:Review:) 3D Printer Pen. FAIL!!!! Worst Thing I've Ever Reviewed

Our Evil Plan to Make Great $10 Filament

Is 3D printing over-hyped? - Quora

Appamakes : Business Card 9 Prongs Assembled WDT, Espresso Coffee