Posted on 8th June 2016 by melyn ‘How much does it cost?’ in Cornish is ‘Py kost yw?’ Yes, if you want to say ‘How much does it cost?’ in the Cornish language, it’s ‘Py kost yw?’. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Tast is the Cornish word for tasteNext post: Pyjama is the Cornish word for pyjamas