BB-8 (fig-002544) is a minifigure. It has 2 parts. It appears in 10 sets, the first of them from 2015.
BrickLink market data
This minifigure is not priced yet. Your visit asks for it: a later price sweep looks the figure up on BrickLink, where BrickLink's catalogue lets us tell it apart from other figures, and records its prices. Check back later.