Where can one purchase the Parrot CK3100 from?

You may be able to find the Parrot CK3100 for sale on online marketplaces like Amazon or eBay, but it is a discontinued model and may no longer be widely available. You can also check with authorized Parrot retailers or specialized electronics stores to see if they have any remaining stock. However, since the CK3100 is an older model, it is likely that most retailers will no longer carry it.