Agreed. William & Mary tin halfpence are always available and I have five or six which I've bought along the way simply because I like them. I don't have any James halfpence though, just three of his tin farthings.
My 'Wow' comment was with regard to it being a 91/92, which is very rare indeed, and how lucky DP was to find one while mettle detecting (Sorry Rob, couldn't resist ).