An older visual connection cable, the VGA cable was common in the era of box monitors. The price of VGA cables is relatively low as it is an older format.

Legacy port

VGA stands for Video Graphics Array, it is a connection interface to send over video signals. VGA is considered a legacy port as it is an older format of connecting. VGA only supports visual signals, unlike HDMI that has the ability to send over both audio and visual. Old box monitors mostly supported VGA porting, LCD screens initially also had the same. In later years as technology improved VGA's usage reduced a lot.

VGA cable

A VGA cable can transmit a varied degree of resolutions. Ranging from 320×400px @70 Hz, or 320×480px @60 Hz (12.6 MHz of signal bandwidth) to 1280×1024px (SXGA) @85 Hz (160 MHz) and up to 2048×1536px (QXGA) @85 Hz (388 MHz).

Generally, the signal is steady in a shorter cable. In longer cables, there would be some degradation of signal. This does depend on the quality and make of the cable. The good quality cables also minimise signal crosstalk, meaning adjacent cables don't interfere.

Given that VGA cables are from a time past the prices are quite nominal. Better quality ones, of course, cost more.