Since new retail stock is virtually non-existent, your primary options are secondary markets.
Retailers like Amazon occasionally list third-party power adapters or accessories, but full units are rare. 🛠️ Key Features & Performance If you choose to proceed with a purchase, here is what the The Drobo Gives One Last Gift - Podfeet Podcasts
You can find units on eBay or Mercari, where they often sell for around $300 to $500 depending on condition and included drives.