There are three components to the price.
The first component would be creating an artificial egg and implanting an embryo in it. This is the science fiction portion of the process. In the original book, a new material had been developed that could mimic bird eggshell. I'm going to ballpark that each egg needed as much as 2 pounds of that material (would depend on the species though). Let's guestimate this material to be expensive, it's machined or maybe uses deposition, and will require ultra-pure raw materials. We'll say $1500 per ounce, so up to $50,000 per egg. The egg will need to be filled with the substance referred to colloquially as "egg white" and "yolk". These can be sourced from other, extant animals, but will undergo a biological cleansing process that removes foreign cells so there can be no rejection or chimera issues. This will require tens of pounds for the big ones. They do this now with some cartilage-like tissues for surgery, and the process can take days and cost upwards of $10,000 or even $20,000. Then, they'll source an embryo cell (ostrich, some bird probably), and do the cloning thing. That probably also costs quite a bit (thousands)... I know how they harvest these from mammals and livestock, but I'm unsure if they have to do it surgically to the bird before the egg is laid, or it they can do it after. All of this work is highly technical, and would require experts in their fields, so you can imagine they are paid well.
The second component would be incubating the egg, and raising the dinosaur to maturity. While there are no dinosaurs in the real world, there are large eggs that are artificially incubated, and large animals in zoos. We can assume that this portion of the cost is largely the same as it would be for keeping an elephant or giraffe. From this site they are claiming the average cost of an elephant, per year, is €100.000 a year. This can vary (and would be cheaper somewhat in a developing country), but this gives us a way to ballpark. Dinosaurs larger (and especially carnivorous) will cost even more to feed. It may cost more to safely contain them. I would double that number, at minimum.
The third component is the technological infrastructure for such a zoo. He needs DNA sequencers and other similar laboratory equipment. It's state of the art. Put it down for $100 million, maybe more. However, for any single dinosaur, you can't put the entire $100m on it... this would be amortized out, over many hundreds of dinosaurs. So less than a million each.
Thus, for a typical dinosaur, I am guestimating that this costs $500,000 to hatch one, and another $250,000 to keep one for a year, plus as much another another $150,000 in amortizing the infrastructure (for the labs alone, not the theme park).
They're somewhere between the high 6 figures and the low 7 figures.
As time goes on, they'd get cheaper, primarily through perfecting technique and having fewer duds.