Looks like the seller didn’t get the initial $12k BIN they were looking for, dropped this to $11k BIN after a week and still ‘only’ sold for $9.1k after about ~6 weeks of being listed.
There was also another 2x cert SL7 Lugia that auctioned for $9.1k a couple weeks ago (also on Z&G, I think) so i’m guessing the seller was quite motivated to move this and just matched that price.