Let's start with the first basic need, real estate.
In the original Jurassic Park film, there were two sites off the coast of Costa Rica. There was Site A, where the park was built:
...And Site B, where the dinosaurs were raised before populating the park:
Costa Rican real estate websites estimate the value of two islands with a total land size of 66 square miles would set you back about $10 billion.
Before unleashing giant monsters onto the public, you'll want to make sure you do all of your homework, which leads us to Research and Development.
Science is expensive, y'all.
Now let's add up the costs of creating these extinct animals.
Bio Arts, a lab in California that will clone your dog, charges an average $150,000 to clone a pup. Multiply that by 50, for the 50 different types of dinosaurs in the park and then add the cost of surrogates, embryo development, stem cell research, and gene modification and we're talking $8.5 million!