cross-posted from: https://piefed.zip/c/[email protected]/p/1781277/extra-large-madoka-and-homura-plush-dolls-madoka-magica-walpurgisnacht-rising

https://taito-goods.jp/shop/c/cmdmg/

The description says they are about 100cm tall.
They cost 66,000 JPY (about 413 USD) each (plus shipping).
I don't think they ship internationally though.