Let's face it, you're not going to put these on your main, or a backup guitar, if you're already on the live playing circuit or even higher.
Where you DO WANT to put these on is the guitar you might use for practicing finger gymnastic, a guitar you carry around in your car on a business trip... I put the strings onto a Harley Benton guitar kit - which I have in my office at work, you know, some people do jogging, some do yoga at work, I play guitar dry.
Having said that, the strings are pretty decent and they can be useful even if you play live often.
Imagine you're in the middle of a gig, your string breaks - do you want to unpack a set of expensive strings? No. Just replace it with a single string from this pack and you're good to go.
The price is fantastic, the quality better than the quality (or lack thereof) of no-name/fake name strings you can get off eBay, so when you're onto your next Thomann order, just throw in 2-3 packs to your basket. Heck, this might get you over to the free shipping realm.