Welcome to MTGSally! Here is a link to the current GW Hatebears modern deck thread, and here is the current Wx Death and Taxes modern deck thread. I'm sure which ever one you chose would be happy to help you develop your deck and be better able to suggest budget options, along with a good path for eventual upgrades.
Cheeri0sXWU
Reid Duke's Level One
Who's the Beatdown
Alt+0198=Æ