They come in many keys.
Extra mouthpieces are available, as well as instructions.
Most are available to nonmembers, though the price is higher. Tudor Lodge, Pymoor Lane, Pymoor, Ely, Cambridgeshire. Sells early bagpipes, bag hornpipes, and Mediaeval fiddles. Also for sale are CDs and video cassettes of music of the Mediaeval and Tudor eras performed on historical instruments. Also carries many lines of early music, for solo performance and ensemble playing.