We, here in the US may have several Catasetinae to choose from, but they are not easy to come across compared to a Phal.
I am fairly confident I would be able to locate a species of Phal I'd like to grow compared to a Catasetum or a Clowesia I'd like to grow.
I understand that you'd like to get some Catasetum, but I am warning you ahead of time to let you know what you're getting yourself into.
I am not dissuading you from getting the flasks. I am just telling you something that you don't know about yet. And I totally understand that you'd like to give things a try. There's nothing wrong with that.
Many people who have never seen a Coryanthes, Stanhopea, Catasetum, or a Clowesia seedling and have never really read about how the seedlings are like would never guess that they go through life as a miniature vine-like plant before they become what you'd recognize as the adult form of those plants.
I still remember how it felt to be surprised by what I saw when I received seedlings from this group of orchids. The learning experience was quite excruciatingly painful. I learned the hard way how delicate they really were. I hope you can appreciate the knowledge I'm passing onto you and the rest of the orchid community who are surfing the web.
Take these words of advice for what it's worth. These are my

.
I do hope you succeed with your endeavors.