I am based in the U.K. and will mail Worldwide.I always mail at the same time unless it's a first time trade and i didn't request the trade.I would then need to recieve my discs first and would post to you immediately on receiving them.Obviously if i requested a first time trade i would mail first.I trade disc for disc (i.e. a 2 disc show can be traded for two 1 disc shows).I don't have Dual-layer equipment but i am prepared to trade 2 of my discs for 1 of your Dual-Layer discs.I normally keep trades to a maximum of 6 discs but will do more if i don't have to many other trades happening at the same time.I don't bother trading artwork or cases but just send discs in paper or plastic sleaves.I never write on discs but rather attach a note to the sleave with details(artist,date,venue,etc...)All my discs are burnt at the lowest setting and Data is verified.I also check on 2 or more pieces of hardware before mailing.However,if you have any problems with any of my discs please don't hesitate to let me know and i will do what i can to put things right.I use Verbatim Full-Face printable discs but will accept other brands of the same quality.