I got this set mainly as a backup solution for the case of one of my regular main harps (Hohner Marine Band Deluxe) breaking during gigs and to have all different keys at hand for songwriting.
For that kind of purpose and budget, the set is pretty cool and the case is of a rather nice quality too, but you shouldn't get your hopes too high at this price level, as the harps unfortunately don't stand up against the competition in form of more expensive instruments.
They're pretty hard to play, especially when it comes to precise bendings. Sometimes reeds get stuck.
So if you know what you're doing and what to expect (or just want a nice case and take the cheapo haprs on top), go ahead an get it! If you're a beginner on the harp looking for something to start with, do yourself a favor and get a single blues harp around the same price, a decent harps makes learning much easier and a lot more fun!