Rectangular (vertical) box of blind bag size...
... four of the main six, Pinkie Pie, Rarity, Twilight Sparkle and Rainbow Dash are in this box. I think it was one of the first blind bag sized items available in the US. It doesn't seem to have a name for the set, other than the names of the ponies written on the box. I can't for the life of me recall what I paid for it, and can't find anything on ebay (at least, not using the search terms I've been using... boxed ponyvilles, boxed G4s, and all kinds of combos with 'blind bag' etc)
Anyone know what they sold for originally, and what they might go for now? (I'm guessing no more than original price... if that...)