No way am I going to spend 100 dollars on a plant, sorry they are cool looking, but the highest I would be willing to go for a plant is maybe around 30-40 dollars.
As for the animals, they are a bit more difrent, I would spend 100-200 dollars on a companion for life. And frogs, getting the price for the Frogs Vivariums and what not. sounds like ALOT of work to me... But Im glad that it works for you, either way, If I had the chance time and money I would love to keep some frogs!