A necessary precondition of the optional labelling was that this was meaningful to consumers and that they were prepared to pay a price premium for eggs produced in systems which they associated with higher animal welfare criteria.
Vabatahtliku märgistamise vajalik eeltingimus oli, et see on tarbijate jaoks tähenduslik ja et nad olid valmis maksma kõrgemat hinda munade eest, mis olid toodetud süsteemides, mida nad seostasid kõrgemate loomade heaolu kriteeriumidega.