When creating treasure hoards, or even the contents of someone's bedroom chest, for your characters to loot it can be quite hard work to come up with something interesting. Stacks of coins and the odd gem may satisfy their desire for wealth, but it's not exciting and carries little story potential.
This product should get you going on both points. Interesting stuff, things of reasonably high intrisic value, but also with some air of significance or a story to tell. Roll your percentage dice or read down the list and pick appropriate items for the place where you intend to put them... or use it to spark your own ideas.
Then think of the story potenial. Take item # 29 (she says, rolling her bones). "Very rare brewer's book with 400 recipes for beers, ales, mead, and cider." Now, in one of my games there's a recurring NPC who is a former bandit, now reformed through the good offices of the characters and working as a brewer, a trade at which he shows a surprising talent. If I put this in the next hoard the characters find, they'll have a reason to go visit Sinon to give it to him. The journey - several days across the territory - could prove more adventurous than expected, or they may find something going on when they get there... moreover, it's added a little more realism into the game.
And I still have 99 more items to find a good use for... a neat little supplement to have to hand when laying my plots.