There is an online coin price catalogue at
http://iwantallcoins.com/WORLD.HTM with NZ coins at
http://iwantallcoins.com/NZL.HTM US Dollars. Unverified.
Update 23-6-2010 This catalogue is a couple of years old now so it can only be used as a rough guide. If you know of a better online guide please let us know.
Currency converter and metal prices. (Q) How to I rate the transaction or leave feedback?
(A) When a sale is complete, both the seller and the buyer will be able to leave ratings for each other.
The feedback rating is from one star to five stars, and a comment can also be left. The feedback can be left from the Rate transaction link in your Members Area.
The feedback can only be left once, and it cannot be edited afterwards.
The site admin will reserve its right to delete malicious or untrue feedbacks.
(Q) How can I trade safely?
(A) Be ever vigilant. New Zealand is generally a safe place to do business but there are always scammers about.
If trading with international visitors be extra cautious. Recent figures show over 90% of transactions from some countries are fraudulent.
Steps you can take to protect yourself.
Use Verified sellers. Verified sellers get the

badge of approval displayed with all their information. Verification costs $6. which is credited back to your account on confirmation and can be used for any fees at Coin co NZ.
Check feedback ratings. Everybody starts sometime and not all new traders are shysters so please use your discretion.
Use Paypal Verified traders.
If in doubt limit transactions to low monetary values or pick up items when paying for them.
Please give a clear and truthful rating for the transaction when complete.
Credits can be used for all site fees. Credits cannot be transferred, refunded or used to purchase items from the site.