Hey Meghan,
I was in Spain, Hungary, and Poland for 2 months over the new year and I did not get a Eurail pass because of that price. Because of that, my travel was somewhat limited, which I ended up loving because I got to spend almost 2 weeks in Budapest and really get to know the city. That being said, I flew from Barcelona to Budapest round trip for $79euro. My train from Budapest to Krakow was over $100 round trip, but much much more comfortable. I think there are positives to both options so whatever you decide you’ll end up happy with. Have fun!