Ok so for a while I, for one, thought it was fairly common - I remember seeing bits for sale on vendors dead cheap but, having a lot myself at the time, I just didn't bother buying any. Now I not only see none for sale, but nobody I know has any hardly, having given it all in at the time. Which, in turn, has made it rare. So how much do people still have, for themselves? And has anybody seen any for sale lately (to indicate a price)?