just a thought. if you have no iron at all, its a lot better to ask for a specific iron item/weapon/armor, since you would also need the anvil/smithy hammer... which you no doubt lack.
Yes, true...but for a chest it'll do ^^ If I was to ask for a special item, a cauldron would be great. But that's hard to trade...so basically enough iron for an anvil and smithy hammer.
Yeh, now you mention it...it takes 6 iron bars, and that's it^^ SO to make it a round number I'd love to trade for 10 bars of iron for the seeds or something else that crosses your mind. I will see then if I can manage to get it.