Jasop_Buttement
If it's just a cable I wouldn't expect to pay more than $30 to if it's gold-plated (and yes they do gold-plate some of these things). If it does more than deliver signal you might consider paying more. But really if it's just a cable how complicated can it be?
My most expensive cable cost me $20. . . it's a stereo cable.
I've tried different cables, and with higher gauge, better insulated, better ends cables youll get a clearer sound because more of the signal can make the journey and my friend views cables like you, where he just gets cheap ones, and his cables hum when they touch the ground and pick up radio signals when you hold them up. So yes, there is some reason to buy more quality cables, if anything theyll last much longer and save you money simply on their long life.
As for one that goes to the computer. I'm not sure if he means its got a usb end or what, but it sounds like its supposed to replace a guitar-computer interface. I got my interface for less than 100$ though and it probably sounds better...