Check out the online support offered by the WoW gold seller on all the 24 hours during the 7 days of the week. This is very much essential for you to get back to the quest as soon as you receive the gold that you need.

Genuine WoW gold sellers make it a point to verify the buyer. A few even send emails or call you over the phone for verification. Ensure that the WoW gold seller whom you contact follows this process.

Don't ever give your account login name and password to any WoW gold seller. That information is not at all required for this transaction. Generally you are required to choose the server name, the amount of gold you would need and your character name for buying WoW gold.

Try to make use of Paypal or any other reliable credit card company for they help you in preventing fraud online.

To verify the genuineness of your WoW gold seller, place your first order for a very low quantity of gold (say 400 gold). If your first transaction is smooth choose the same vendor for your further WoW gold purchases.

Surf through the Internet and be aware of the cheapest available WoW gold prices. Compare that with that of the price that your WoW gold seller has offered. A comparison chart of WoW gold prices along with the sellers is available online. Make use of the chart. This would help you in getting WoW gold at very cheap rates.
Beware of the policies of the wow gold seller. Get to know their policy regarding refunds. This would be very helpful for you in case you face a problem in the transaction