The Vidar Alter is an aftermarket IEM cable by Erua Audio. Their flagship model, Tawa has won our "Best Cable Of The Year 2021", so they definitely know how to craft great cables. The Vidar Alter is made of OFC Copper, and it's priced at around $280.
Erua Audio Miro is a serious upgrade cable made of silver-plated copper. It's priced at 4888 Hongkong dollars, which is about 630USD.
Erua Audio Tawa is a high-end upgrade cable made of gold plated silver & palladium plated silver. It's priced at around $1299.