Due to the use of custom parts for these cables they are more expensive - that combined with Amazon fees means we have to ask for $39.90 which is just 10USD over the list price of the Cannonkeys cables that are heavily discounted due to the QC issues.
We would suggest reading more about the Cannonkeys cable on their QC document: https://cdn.shopify.com/s/files/1/0238/7342/1376/files/Cannon_Cables_Coiled_Cable_QC_Guide.pdf?v=1674847351
For reference, we also offer Coiled Aviator cables for $29.90 on Amazon: https://www.amazon.com/CableMod-Coiled-Keyboard-Cable-Carbon/dp/B09LT3M3MG/