Pretty coloured eggs from fancy breeds can now cost as much as £4.50 for half a dozen. But some people have found a sneaky way to avoid paying a premium Pretty coloured eggs from fancy breeds can now cost as much as £4.50 for half a dozen. But some people have found a sneaky way to avoid paying a premium Name: Posh eggs. Age: Best before three weeks from now. Appearance: Multicoloured, oddly sized, often with bits of feather stuck to them. What’s this got to do with the price of eggs?