Too Me I think they are a rip off but each to their own I suppose.
Although I am impressed with Cadbury's bringing out a fruit and nut egg (the egg itself made of fruit and nut) and also a Cadbury's one.
I have heard though not seen it there is a Maltesers eggs (again egg is made of chocolate and maltesers)
Shoe box and some chocs will always be cheaper.
And just as much fun.