You can register your new gTLD for anywhere between $1 and $100, depending on what I suppose they expect their target demographic to be willing to pay. Dot horse is more expensive than dot webcam, for instance, and I imagine dot lawyer is more expensive than dot lol.
However, if your domain name uses a word or phrase that happens to be in their "premium domain" dictionary, then they'll charge an elevated price based on heuristics similar to what yesteryear's domain squatters used. Some simple and concise domains can run hundreds of thousands of dollars.
cheap.horse is $25/yr
tiny.horse is $100/yr
internet.horse is $1000/yr
free.horse is "ask us"
Controlling the TLD is the ultimate form of domain squatting.I wonder what will happen when some of these companies go under because they can no longer afford to pay off their debts? Will those that registered domain names lose them outright? Can someone else buy the gTLD and take them all over?