Up to date the quality of DVD boxes single or double Hama is no longer to do and this for 7 as for 14 mm.
These double black cases 14mm rigid enough, are well finished, the transparent plastic is tight, DVDs firmly hooked by fixing a well-studied, and closing is "clicks" good.
This is true that the price for these 5 double boxes may seem high (8.68 Euros including PC to date) compared to 30 ordinary cases of the same brand (13.49 Euros including PC) or 10 double rooms (12 Euros PC included to date) which does not make it particularly attractive product and can eventually be expensive, especially if lon account store all DVD in such cases.
In conclusion, these cases are of good quality, but expensive for a lot of 5 rooms where even 10. They are therefore, if lon does not breaking the bank too, with moderate use. For everyone to see ...