My objection to spending £200 is the theory of replacing a helmet if it suffers a serious impact as its protection may be compramised, which would be ironic considering the point of buying a premium helmet it the first place. And whereas with a bat you can repair damage more often than not, with a £200 helmet, to my knowledge you cant repair it and are effectivley £200 out of pocket.
Realisticly none of us are facing 85-90mph bowling on a hard and bouncy track, a £80 and a £200 helmet would both protect you from a serious impact and should both be replaced folowing.