Comment by toast0

At my last job, I worked with MarkMonitor to get registry lock on our domains after an incident at Network Solutions [1]. It was expensive, but the price didn't matter because they had an annual spending requirement that was more than our annual renewals, since we didn't have many domains. Ownership has changed since then, and I don't have the slightest idea about current pricing. I think they charged us $1000/year for registry locks, on top of the $100/year for a .com/.net. If you had more domains, they might have had a bulk discount; but from our perspective, it was pay $$$$/year for registry locks on our two important domains and get the rest of our registrations free.

Never had any hijacks after that. We did have to postpone a DNS service change because the CEO didn't answer the verification call and the registry wouldn't try again on the same day. No big deal, we set up the lock for a reason and fail-closed is desirable.

[1] I know, but the CEO thought they must still be good, because they were in charge in the 90s. I'll check closer on these things in the future, I guess.