I probably average $25 a month on cosmetics, including sub boxes (the only one I get consistently is Birchbox, though, so that keeps the price down.) It boggles my fiance's mind that I need as much makeup as I do ("THAT eyeshadow looks EXACTLY like the OTHER eyeshadow in that PALETTE I got you for your BIRTHDAY...why do you need another?"), so I would probably get more if I didn't have someone preaching common sense in my ear every time I try to purchase something (I need to stop taking him shopping with me). I do generally get what I ask for when it comes to birthdays and holidays, though, so that definitely keeps the cost down, and I try not to make impulse buys when it comes to makeup just because something looks pretty and shiny and would look nice in my collection (I do have recurring fantasy about having piles of unopened makeup and just picking up handfuls and saying, "It's MINE...all MINE!" Mwahahahaha...)