Typical derailleur cable, presume that Shimano's quality is going to be a tad higher than your generic inner shift cable, so willing to spend a little extra.
My bomber bike uses a Shimano Altus front derailleur which being your bottom line basic component lacks some nuanced features that higher priced components employ. This particular FD flexes the cable at a small angle as you shift between chain-rings. Eventually, our friend, metal fatigue starts snapping the individual wires on the cable and you know the rest....
(this occurs pretty quickly, occasionally, I'll check for broken wires and replace the cable. In one case, I examined the cable and no breaks were observed-two days later, bink)
After a couple of these return home rides in the 34-14 gear, I started buying these in bulk and carrying a spare in my seat post bag. When the sordid event occurs, it's a five minute fix, and allows me to continue the ride with at least two of the triple chain-ring set. I've always bought the bike shops, but decided to buy on-line in bulk to skip the drivebike. Get about a thousand miles on the cable before the bink
Shimano quality at a bargain basement price, when on sale. These cables are as good as any I have used. At the sale price, you might as well stock up. During cross season I might need to change out cables a couple of times so it's nice to have extras on hand.