I don’t know that I have seen this get below $13 before- no wonder it’s selling!
Right now on Amazon you can get the Insect Lore Live Butterfly Garden  for $12.99 (its usually around $17).
It looks like a great toy for your kids and could be a good learning tool!
- Waterproof PVC Fabric Shell
- See butterfly metamorphosis up close.Reusable, collapsible habitat.
- Includes feeder.Complete instructions included.
- Includes mail-in voucher for five butterfly larvae and special food. ($5.00 fee for processing)
- Witness one of nature’s most spectacular transformations up close.
- Just mail in the included coupon for larvae and food.
As always this is Amazon- double check the price before you buy!