The ones you posted are already sold, but there are other similars.
Here’s the ones on yahoo auctions (you have to bid to win)
https://auctions.yahoo.co.jp/search/..._i=&fr=auc_top
Here’s the ones on mercari (you can purchase directly)
https://www.mercari.com/jp/search/?keyword=Appears+ポスター
The appears one is not available on any on them sadly.
Since you don’t know Japanese you’ll need a middle man. You can use zenmarket or celga since they can purchase and bid on your behalf, just contact them.
You can try searching on yahoo and mercari frequently. Just write on the search bar the name of the poster you want (loveppears, appears...) and paste this ポスター with it (poster in Japanese), probably there will be appearing new posters every now and then.