About this 3D model

This project was created for my 3D printing class. I made three different sized bag caps just like the commercial sale product. Here is the link: https://www.amazon.com/Sealing-Keeping-Storage-Sealer-Different/dp/B079J98T2D/ref=sr_1_2?keywords=bag+cap+chip&qid=1575990427&sr=8-2 The commerical sale cost is $13 while the printed cost $3.52.