I'm currently having an obsession over an item purchase

it's a cd (I won't give album or artist, that's not needed in this situation),

but my obsession is that I keep having to purchase the item- again, and again, and again.

the cd itself is £23, so to buy lots of copies when what I have all ready works seems awefully expensive

and then if it's not in a certain type of case with a certain picture on the front, it's made worse and I just have to throw it away and look for it again to rebuy it.