Dawn and TP
There are 2 fees for using the tarding post, a listing fee and a sale fee. These fees serve 2 purposes, they are a gold sink to fight inflation and it prevents people from using the trading post as storage.
There is no fee for people placing orders for items or completing a transaction, only the seller of the item pays fees. Buyers dont pay fees because you want a healthy economy and as many people in it as possible.
You will still pay 15% fee for selling to the highest buy order so selling it for 500g would be better than 460g.
There is no forum for grey markets (ie a place to sell them without playing the fee for the trading post) I also dont recommend trying to sell in the grey market as the potential for being scamed out of the weapon is high. The TP is secure and safe to sell items.
I recommend looking at Gw2 Spidy for historical data for the weapon to get a feeling of what the weapon is worth and what people are willing to pay
1.) There is a tax since it acts as a gold sink. Without sufficient gold sinks, there would be inflation, which is not a good thing.
2.)There is a tax for everything you sell, whether that’s through listing it or directly selling it to a buyer. You do not get charged for listing buy orders (i.e. you want to buy Dawn)
3.) There is no reliable place to deal in the black market, and this forum isn’t (thread will get locked). Not to mention, you are opened to being scammed, or becoming a scammer.
It doesn’t take long to grind up the gold to get it. Grind a week and you’ll get the 30-40g required to list it.
[Currently Inactive, Playing BF4]
Magic find works. http://sinasdf.imgur.com/