I think vanilla accounts automatically get the battle chest version, which is expanded to included the previous expansion during each expansion. It looks like

I think vanilla accounts automatically get the battle chest version, which is expanded to included the previous expansion during each expansion. It looks like the battle chest includes everything up to Pandaria, now. https://eu.battle.net/shop/en/product/world-of-warcraft https://eu.battle.net/shop/en/product/world-of-warcraft