I unfortunately couldn't find Jet or Tyrant for under $30 when I made the deck, they may be a bit less now but at the time they were annoyingly expensive. I just bought them both off TCG Player for about $30 together
Budget blue eyes isnt that good but make it non budget with jet and tyrant. add some key traps like ult creature of destruction, skill drain, solemn strike/judgment and true light makes it so much better. also nebula dragon can set up xyz plays easy. or blue eyes abyss, chaos form and chaos max dragon is a good combo.