Yes, I love that plant. And, in the scheme of things, it is not that expensive. If you have Chewy autoship you can add to that; or ship free with Amazon Prime. If you have neither, the least expensive is $11.40 on eBay with free shipping. If you scroll down there is one Best Offer and free shipping.
When females are sold they are sexually immature. When they become mature they start acting more aggressively toward each other. This is why so many people are surprised when the sorority goes down the dumper really fast.
It is my understanding that tanks packed with plants have a much better chance of success...also, the bigger the tank so 25 gallons is good.