Hi Bob,
having looked at the prices 
I think I will have a go at casting my own. I have cast my own lead fishing weights in the past so it shouldnt be too difficult. I just need to come up with something to use as a mould, I am not sure what to use yet but it will come to me if I dont think about it. I find that when I dont think about stuff it just comes to me, but then I have always been a bit weird like that 
