This happened to me, Skyscanner quoted the airline's price as (let's say) 300 Euro, a 3rd party site qouted it as 180 Euro. So I followed all the ordering steps at the 3rd party site, entered my CC, hit pay, and the site said "Sorry, the flight is no longer available for that price. The new price is 300 Euro. Buy anyway?". I wish there was a button to tell them to get fucked...