Here's some more info on the carefully-managed conditions required to get the plant to thrive:
Perhaps I do not have the details correct, but I was told this story: Kew Gardens had one of these flower in their greenhouse many years ago, when they were very unusual in "captivity". Another botanical garden (perhaps the one in St. Louis) subsequently was able to get one to flower, and the bloom was quite a bit larger. They printed up T-shirts that said "My Amorphophallus is bigger than yours"
I wonder if some botanical gardens also think about getting some carrion-eating flies and beetles (which are normally attracted to the flower and pollinate it) to make the experience more complete?
There at least the giant lily needs to be pollinated by hand as they are lacking the specialized beetles https://www.botmuc.de/en/audio_tour/202.html so I'd assume some gardens do think about these matters.
 Whose Wikipedia I had a small part in approving: https://min.wikipedia.org/wiki/Laman_Utamo  http://www.visitniasisland.com/surfing/  https://en.wikipedia.org/wiki/Lake_Toba  http://www.rahmatgallery.com/
Both were spectacular. Neither smelled at all.
I think the smell may only last for a short period, likely before the bloom peaks. We didn’t want to jump the gun on the bloom, so we visited a day after we heard it bloomed.
I visited the bloom my partner works with on the day after it opened, and while he attested that it was pretty stinky on opening, it wasn't really much to smell when I was there.
Perhaps they over reached on budget and needed a way to balance the books? It might also be priced like that to keep the rabble out. If it walks like elitism, and talks like elitism, etc.
It’s a shame — it really is an otherworldly achievement. One of the finest botanical gardens in the world.
- Sir, the Biological Society won't accept that name.
The word 'avocado' is an anglicization of the Nahuatl name for the fruit, āhuacatl, which translates directly to 'testicle.'