Where can I buy octa space?

Excuse me, could you please clarify where exactly I can purchase octa space? I've been trying to get my hands on some but I'm having trouble locating a reliable platform or exchange that offers it. Could you point me in the right direction? Are there any specific requirements or steps I need to take in order to buy octa space? Additionally, are there any safety precautions I should be aware of when making such a purchase? Thank you in advance for your assistance.