$330k/month means that you could have multiple employees specifically and solely tasked with managing this one account. It is not a small amount by any means.
jgurewitz's post is probably closer to the expectation. $330k/month is a nice chunk of change, but that's their primary revenue that's expected to mostly go to support the rest of their business operations. They're obviously not going to spend all of it on employees to manage that specific account.