Still have to get a ridiculously priced ferry for such a short distance 
It hasn't got any duty free either
if you go to Alum Bay (where they have multicoloured sand and empty glass objects to fill with such) try not to laugh at the light houses
My brother got and filled one (c 1960) and my mother proudly displayed it on the mantelpiece for years clearly not realising it looked much more like a multicoloured dildo