Bapes..cant help you i go to the store.
Jordans..
www.pickyourshoes.com or
www.23isback.com
pickyourshoes is official.They show all sneakers that are out now.Dont buy anything from there tho, they'll beat you out your head on the prices.23 is back is also official, they show the release dates and all.
Evisu..
www.evisu.com duh..that is the ONLY offical site.When you go on there they got links to official retailers.Like Nordstrom and all that.