I, for one, had never heard of 'pork breast' and had to google them. Not really any great explanations out there. But then again it also took me years to figure out just what 'chicken fried steak' was!
I'm just old enough to be set in my mind - breast meat is from a fowl and if you serve me 'chicken fried steak' I better see both
chicken and steak on the plate.
That being said, I accidentally bought some pork breast (big box store) thinking they were spareribs and cooked them accordingly. Well, needless to say I was disappointed and was glad I wasn't serving them to others.
So now I will reserve them (if I ever buy them again) for something definitely slow cooked.
But to answer your question notforme, ask the butcher in the meat department
of a big box store. such as Loblaws, Fortinos, Foodland, Freshco, Independant.