i was wondering if styrofoam will work to replace perlite considering that ive been looking online and in stores for perlite and havent found it without any nutrients under 30$.

You do know perlite is a rock right?
I actually went to the guys house and picked up a bag. It's a great deal for only around $30 including shipping. No nutients and the perlite particle size is rather large compared to the little store bought bags. You'll be happy you got it.
http://cgi.ebay.com/Krum-Horticultu...ItemQQimsxZ20100306?IMSfp=TL100306174006r4744
You could also use lava rock? I too, noticed the pricing of perlite so I just started throwing in a handful in my pots to mix up. I have an N. Alata which is just growing in straight out of the bag "orchid mix" (without mychorrhizae).
) I am truly impressed at how greatly it is possible, to totally miss the point of a conversation on so many threads.! It must take a great deal of real effort and work, to so consistently "avoid" saying something of even remote pertinence, in relation to the current subject at hand! 