With stuff like this you're taking a chance, and what probably ends up happening is that they'll do a worse job than you would've done if you had set aside the time to do it yourself properly.
Services like this exist entirely because of ignorance. People who know how to reprofile a knife don't bring their stuff to a department store to get it done for them. They just do it themselves. The employee sharpening your knife doesn't know you and doesn't care about your knife. What they do know is that you probably can't judge the difference between a good job and a half-assed job, and you probably don't know anyone who can. Otherwise why would you be bringing your knife to them?
Use the service if you want. You might get lucky. Just realize that it's a gamble.
Services like this exist entirely because of ignorance. People who know how to reprofile a knife don't bring their stuff to a department store to get it done for them. They just do it themselves. The employee sharpening your knife doesn't know you and doesn't care about your knife. What they do know is that you probably can't judge the difference between a good job and a half-assed job, and you probably don't know anyone who can. Otherwise why would you be bringing your knife to them?
Use the service if you want. You might get lucky. Just realize that it's a gamble.