Lurking in a sandwich bag amongst various other toys in a charity shop, I spied this set of six large My Little Ponies last week! They measure about 6 inches high and are all in good condition (after a bit of hair care).
They were sold as a six-pony-set called Power Ponies and include Zapp Rainbow Dash, Mistress Mare-velous Applejack, Radiance Rarity, Masked Princess Twilight Sparkle, Fili-Second Pinkie Pie and Saddle Rager Fluttershy.
This is the packaging. Applejack looks to have been the only one with removable accessories (saddle with lasso, plus tail and mane covering).