Load lugger?

The box on the back of the bike when I got it can only hold a single helmet, not enough space for a long trip. There are larger Givi boxes available for about £100 or more, but I found good reviews of a 48l box by Tech 7 for about £50. Jeff Hall had one in stock for £49.99, so that is now gracing the back of the bike. It looks a bit big, but it will do the job, together with the throw over panniers I've just ordered.