Man, I sell more than I buy these days XD
Basically, I pay for all my have-to-do's (bills, rent, food, etc), then make sure I put some aside in my savings, and THEN, if I have anything left, I'll buy ayu stuff. Which is like once a year MAYBE.
As for what I get, I just get the stuff I like. I have a list of cds and concert merchandise that I prioritize over ayu's other stuff, and that's what I get. It takes awhile to save up for the stuff I want though. I just now got the 2CD+DVD version of "NEXT LEVEL," for example, as well as some AT2009 concert merchandise. (I still haven't gotten GUILTY or A COMPLETE yet either, and I need new copies of some of her albums that I've sold over the last two years or so.)
Despite my brokeness I still have this foolish dream that one day I'll have the biggest collection of Ayu merchandise on the western hemisphere. Never gonna happen, but hey.