For pirate night - we literally went to Goodwill and bought stuff we could tear up but on a different night - I did the Knight package for $19.95. The package does not include an outfit but I purchased the one below for $14.64 from Amazon.
The Knight package includes a sword and shield and together with this costume I brought - it looked crazy amazing with the shoulder pieces and built in 'muscles'. Can't count the number of people who stopped us and asked about his outfit. He was so into it, he wore it all day and night.
Disguise Lothar Classic Muscle Warcraft Legendary Costume