good brushes arent cheap.
for a quick fix and good range of what u'll need, go to the makeup store (frends beauty is the best) www.frendsbeautysupply.com
and buy a set of ve's favorite brushes. (www.favoritebrushes.com)
there is an FX set and a beauty set.
there are deals on them at the trade show, but if u need them now, there isnt much u can do.
thats the easiest thing, but not the cheapest.

well, for gluing, you want some foam wedges and a fine paint brush (not a good one) that you have bent to an angle for applying glue under the edges of the prosthetics. You'll want some rubber gloves for doing the "RMGP" foundations, though sometimes you just apply castor oil as the foundation. You'll want a super fine brush for doing mascara and a "dome tip" brush for eye work, some larger stiffer brushes for for applying color over larger areas. and a powder brugh, something large and soft enough to not smear makeup. Powder puffs for applying setting powder. a short heavy glass and some brush cleaner. some kleened or paper towels. makeup remover and after makeup lotion (something light with aloe is good) and of course adhesive and makeup of choice. (rmgp, foundation pallette, F/X colors, eye shadow / pearlescent pallette. eyebrow pencils and eyeliner, etc.)

of course they will provide most of this stuff I do hope.

but that's basically what you'll need for makeup work in general.

er, that's NOT WHAT YOU ASKED is it.. hrmmm okay the real answer -

the artists value brush set I have bought a couple of at pearl will do most of what you need, you'll want a couple fine makeup brushes as well, at least a "dome tip" and a slant tip for eye work, and lining. (but that's what I already said, in essence) and you can make do with the pearl set if you must.