That just means that you go to www.trollandtoad.com, search all of the card's in your decks prices, add them together and it must be under the budget to be a valid deck. (in this case, under $160)
They're pretty solid, if you want to build them. If you need any help, be sure to ask me. I'll be glad to assist ya.
Also, if you are interested in a challenge, check out the Tabletop Game's 'The Best Build' Week 1! More information in the thread~ /end shameless advertisment