Thank you. I was in the negative and i wasnt waiting 2 days.

1 of 1 now, all class green black hole unusual. Bought for 550 keys.

Old price of 276 keys is 3 years outdated.

The only one in existence, as the only owner, and with prices inflating, its definitely worth around 600+ keys.

https://imgur.com/a/550-keys-RRnPFbo

For clarification - the screenshot might say 550 but it is actually 500 keys, so the suggested value is correct.