Have you spent money on AKB product content? Do you collection member's photo/item?
I have spent way too much on AKB stuff. I don't collect the monthly sets but I still buy pics from cds if I like them. For example, I have full senbatsu sets of Flying get, Gingham Check, etc. I mostly spend money on the Dvd/bluray releases now, oshi towels, goods from the AKB shop, etc.