Just found a heap of sealed Slugs in one of my closets yesterday. I have ten or so of the 'coffin packs', and many of the smaller 3-packs, all from series 2 & 3. (IE: enough to easily complete both series, maybe twice over.)
Also found a large pile of the little 'Handful of Heroes' figures, about 100 of 'em.
Sale OR trade, kiddies - sale OR trade.