You are New to Listia and do not have your Sellers Wings so you cannot do a GIN of 50K, no matter what your update says. And do you realize 50K is only = to about $25.00???
This has 4 days - 17 hours left on it --You don't get to end the listing. You can't even change anything because there are already bids placed. You would have to send in a support ticket to see if the Mods will even end it, it's possible they won't. You are technically responsible for sending it to the winner no matter what the end bid. Once they rec. it they will release your XNK out of escrow into your wallet, but not until it's been shipping and received.
You understand you won't get cash/USD$ for this tho right??