I have no idea. I just re-post pictures I find on the internet. The iron work in this picture is a) antique and b) custom-made so I imagine it would be thousands of US or Canadian dollars to have fabricated today.
if you are seriously interested i know someone who can design this or a similiar pattern for you, have it drawn up custom cut from aluminum or steel plate
cost would depend on thickness, size, material, finish
MATTHEW'S ISLAND 
Where can I purchase this wrought iron for the door on the pic also what us the cost
I have no idea. I just re-post pictures I find on the internet. The iron work in this picture is a) antique and b) custom-made so I imagine it would be thousands of US or Canadian dollars to have fabricated today.
if you are seriously interested i know someone who can design this or a similiar pattern for you, have it drawn up custom cut from aluminum or steel plate
cost would depend on thickness, size, material, finish