[edision]

There have some ways to check if one website trustable or not:
1 Contact with the Live support and ask something, if there always have some guys on, i think it is safe.
2 Make a call or talk on skype for a confirm.
3 Buy a little amount first and check.
If you want to take some gold, you can try about www.goldhae.com, it is farm the gold theirself, you can ask the stock first, there have a lot of gold4rs in the stock, and the verified work also a little easy, but better not to buy a big amount in the first time, then the order will go through easily, once you are a long term customer, each time you can take it soon.

Kind regards to everyone who play runescape, i love this game so much.