The worth of an account is not going to be measured if you are a campaign manager or not, but I think it's based on the reputation that the person has built on that account and what the buyer thinks they can achieve using that account.

Aside from the campaign managers that you have mentioned above, there are other members who have built up trust in the community, and their account can be offered the same amount or even more, but the problem is, can the buyer be able to accomplish an exploit using that account before they get caught that the account has changed hands?