The major argument centers on the buyer and broker saying the seller and/or his broker Ryan Colby should have stated there was a high yearly renewal fee. There's lots of discussion and accusations between the parties with each side blaming the other side with Ryan saying it was duty of buyer to research the renewal fees and Andrew claiming it should have been disclosed up front. If that was known the buyer would not have purchased the domain name.
This is a major problem not only with dot-tv names but with numerous new tlds where so many have both premium registration costs plus high renewal fees every year, sometimes as much as the initial cost, or even more. To make matters worse new tld renewal fees are often not disclosed, or hard to get from the registrars. That is no doubt a major reason so many new tlds domains are already failing or doomed to fail.
On this particular case I believe both the buyer and sellers broker are equally responsible. Both domain brokers are extremely experienced and should be aware .tv domains and others (excluding com net org and several more) may have very high and ongoing yearly renewal fees and the buyer should have been informed about that aspect by the brokers, IMO.