It's hard to know how much 30 feet is until you grab one and stretch it! hahaha Anyhow, these cables seem to be in good shape and should hold up.
Asiahorse 16AWG Pro Power Supply Sleeved Cable For Power Supply Extension Cable Wire Kit 1X24-PIN/ 2X8-PORT (4+4) M/B,3X8-PORT (6+2) PCI-E 30Cm Length With Combs(Dual EPS Black)
14 Review
GoPro HERO9 (CHDHX-901), 23.6MP, 5120x2160, 1720 mA, black
32 Review
High-Quality BENFEI DisplayPort To HDMI Cable For Seamless Connectivity Across Lenovo, HP, ASUS, Dell And Other Brands!
18 Review
High-Quality 14AWG Braided Speaker Wire (15 Feet) With Dual Gold Plated Banana Plugs - Oxygen-Free Copper (OFC) Construction For Superior Sound - Black
15 Review