Buying a secondhand cosplay costume can allow you to get dressed up for your next comic con with minimal effort, while also supporting the creative work of these cosplayers. Take a look below at 10 places to find used cosplay costumes for sale so you can get the look you want for your next comic con. They have a database where cosplayers can list their costumes for sale. However, such awesome cosplay costumes do demand some level of physical fitness if you are planning on wearing all day at, say, kids cosplay costume a convention.