I grew them for awhile, they seem slightly smaller than the lotuses I am currently growing.
Out 3 packs of bulbs only 2 bulbs grew, but they really took off. I couldn't get them to stop sending up floating pads so I eventually took them out.
I don't think they are worth the money if you can get ones that are already sprouted somewhere else. I found some at petsmart already growing for $2 each.