I think the US price is a real bargain JV and you might want to think about ordering from there ... so far I only have a rough guide and they were about £30 for the two sizes I believe but that was not a concentrating , think about it price - think it was just in passing conversation and with the exchange rate if you have a US contact - you could save quite a bit if you are wanting more than one whole set etc etc ..

oops is that called not good for business? lol but I have to be honest
smiles
Joanna