I have a vague memory that the local port used to incinerate hives in their incinerator. I assume that ports and airports have some means of destroying all the contraband goods that come in and get confiscated including many tonnes of honey every year.
I'm not sure I'd be willing to pay $50 a box for safe destruction but $50 a hive would be probably cheaper than what it cost me to do it myself.
Once upon a time... over 20 years ago.... I do know that the incinerators at Lincoln Uni and Port Lyttelton were used.
Unbelievably the first day of an AFB surveillance contract that I undertook in 2000, the first hives I inspected had AFB and the owner disposed of these.
Then I went to a site in ChCh, the whole of a huge front lawn was covered in Langstroth hives and nucs, but not many had frames, most had no frames! Tony Roper had just been appointed as AQ SI officer, hadn't even moved here, and I understand that his first job was taking all these hives to Port Lyttelton for incineration - No AFB, but illegal, cos no movable frames.
My third site, I inspected that day, I had to use a spade as a hive tool to crack it, and I was unable to put the hives back together, so they had to be destroyed as well. The beekeeper had cheekily placed it in a public park, so he had to attend to it ASAP, particularly as he was the Parks and Reserves manager for a local body! His staff happening to be pruning trees in the park that day thought it hilarious (apparently he was an old grump).
The fourth site, I stepped in a massive smelly dog poo, and the hive had not been inspected for over a year; according to the previous AFB inspector report placed on the hive mat over a year previously. There were numerous swarms in barns on that property, and The Rope had to attend to these also.
What a welcome to being an AFB inspector! Seriously questioning, what I had let myself in for. Fortunately the other sites inspected that day were normal, as were the remaining days of that particular surveillance programme.