Where can I buy GRAPE coins?

Excuse me, I was wondering if you could help me out with a quick question. I've been hearing a lot about GRAPE coins lately and I'm really interested in getting my hands on some. However, I'm not quite sure where to start. Could you possibly point me in the right direction? Are there any specific exchanges or marketplaces where I can purchase GRAPE coins? I'd really appreciate any information you could provide. Thanks in advance!