Cuba Libre?

Now that diplomatic relations between the U.S. and Cuba have thawed significantly, I've seen a lot of trips advertised for Americans to visit the country. I can't believe how much these trips cost. I saw one recently offered by my alma mater and it was $5,000!! That seems expensive to me. Five grand?? I'd love to visit Cuba but the price needs to come down. I don't understand why traveling there is so expensive. Maybe because the country was off limits to Amercans for so long and now the travel industry folks figure they can make some cash by overcharging since the travel restrictions are gone now.