How many emeralds should 1 pay for the following in minecraft?

I'm deciding to make a server and a market, so i need help.

How many emeralds should one pay for

1 block of iron?

1 block of gold?

1 block of diamond?

1 bread?

1 bow?

1 tool and each type? (tool would be hoe or axe and type would be golden hoe or diamond axe)

If you want to add anything else, please do. I will give you full everything if you answer with more than 2 extras!

Iron 5
Gold 5
Diamond 10
Bread 1 for 5 bread
Bow 5
Pick axe
wood 1
Stone 2
Iron/ gold 3
Diamond 5
Same with all the other tools.

3 blocks of iron for 1 emerald
5 blocks of gold for 2 emeralds
1 block of diamonds for 1 emerald
10 bread for 1 emerald
4 bows for 1 emerald
2 diamond swords for 1 emerald
2 diamond tools (any) for 1 emerald
3 gold swords for 1 emerald
7 golden tools for 1 emerald
5 iron swords for 1 emerald
5 iron tools for 1 emerald
(in case you're wondering, i see gold as having a less value because the tools and armor break easier, making one of the only uses for gold in golden apples or golden carrots).
And emeralds shouldnt even be tradable with wood or stone tools, reason being its easily obtained.
EXTRA:
2 Stacks of 64 coal for 1 emerald