Fortunately I don't care for Elvis merchandise and first/international pressings, so that saves me quite a few bucks. Currently I'm quite happy with the amount if FTD's being released. And with the new movie DVD's coming out, the "Elvis budget" is quite tight.
So besides the FTD/BMG CD's and the occasional bootleg, I like to buy an Elvis book once in a while. My latest buy is "Such Vicious Minds (a murder detective featuring Elvis)". I can really recommend that book (or any in that series) to any Elvis (or detective) fan