Considered the easiest of the 2nd series you shouldn't have to wait relatively too long for one to surface. Saying that 20 backs are not getting any easier to find-nor any cheaper :?
Probably is one of the easiest ones to get of the second 8. Palitoy is on another stint of popularity so even the more common pieces are not showing up as much as usual.
However in time getting one shouldn't be a problem!
I rem mine(when I was a kid)not making it home on his card! Mum picked me up from school and had it with her to give to me in the play ground and luke was ripped open straight away!!