I actually have a dendrobium that has very large flowers, and the top to bottom measurement is roughly 4 inches. However, yes I know what you mean. My favorite is when they refer to an everyday phal as a "Rare Species". The large flowers though, while possible, if you don't have a greenhouse running on feed schedules, etc...you won't get the same results. And personnally, no plant grows like that every single year...they have their good years and bad...just like people.