[eek04_]

An A3 (11-3/4" x 16-1/2") poster here in Ireland starts at around 7 euro ($7.50). 80 euros is presumably for the aluminium dibond print - which sounds like an extreme quality print material, and those gets expensive fast. An A3 on that starts at about 50 euro (and it sounds like the author got an A2 - twice the size of an A3.)

[morsch]

In my experience, Whitewall is also not exactly the cheapest store around (but they are very good).