A while ago we reported on MLP plushies made by Play by Play which we found in a local store. We've now finally found promotional images of the larger plushies, which are 40cm (16 inch) tall. There are also plushies that are 17cm (7 inch) and 25cm (10 inch) tall.
The quality of the larger plushies are obviously better. The mane and tail are better structured (the smaller plushies have very fluffy hair) and the eyes and cutie marks look better. There also seems to be a alicorn version of Twilight Sparkle.
So far they have only been spotted in Europa, and the prices range from €9 ($12) for the smallest to €40 ($54) for the largest.