Theres only one really trustworthy cosplay site: Cosplay Gamer, they sell alot of really nice video game costumes, weapons, wigs, and accesories
they offer 1 year warranty so your guaranteed to like your costumes or you get 100% of your money back. thats one of the main reasons I get all my cosplay stuff there.
they also have free shipping, free returns, store credit, and photo contests. i was really suprised when i ordered my first assassins creed costume, it arrived at my door in 1 week and the costume was perfect fitting, comfortable, and the quality was above average too
Some of the best websites to buy cosplay outfits include CosplayFU.com, CosplayMagic.com, HelloCosplay, MoonCostumes and QQCosplay Design Studios. These websites have a wide range of costumes and costume paraphernalia for you to choose from.