I'm hearing from other hosts and see articles on Airbnb having variable pricing systems that adjust pricing for you, but I can't find it anywhere on the site or on my listings.
Is this only available in some markets or to some hosts?
it's the smart pricing system - Airbnb automatically adjust your daily prices within the minimum and maximum you set based on market trends/ demand; it works for some people although for me, I personally do not like it as I like to know exactly how much I'm charging but hey, you might like it. Follow the path below to activate if you decide to go ahead with it.
Host
Manage Listing - click on the listing you wish to amend, this will open a default calendar page