I sometimes see potted nepenthes at flower shop in Japan, but this is larger than them and the color is darker than I'd ever seen. I took this photo at the flower shop when I went to morning fair. It had a long vine and the pouch-shaped flower hang down from overhead.
Though I wanted to buy it, I gave up, because I was a foreign traveler, and only enjoyed taking photo.
The following photos are linked to their larger photos.