I have used virtual trader many times now for buying and selling rsgp he is very quick and has a variety of payment methods.
I have compared his prices vs a lot of other competitors specially that use bank transfer and I must say he is the cheapest by far, to the point I've even considered buying from him and selling to someone else..
I made a sythe account just to vouch as virtual trader is the only person I go to when it comes to rsgp
pm me to buy/sell gold/csgo skins or to donate to Sythe =)