When in Broome I thought I 'd buy some games to add to our collection . Deep within a general store I found this set of Dominos on a shelf . In a raw timber box with inky print , I felt this little set was going to be pretty special . And it was only 4 bucks !

Available choices: (I) Because they have a collection .; (II) None of the above choices .; (III) Because they found a set of Dominos on a shelf .; (IV) Because the writer likes games .;
Q: What 's a possible reason the writer thought they 'd buy some games ?
(IV)