ThatOwlWoman
Leftist Vermin
You can get cheap stuff, but it's normally only partly saffron, mixed with safflower stigmas that are often dyed. I bought the Persian sargol stuff. I'd show a link, but I bought it on Amazon.
I recall seeing an empty saffron bottle (think it was McCormick's brand) on the shelf in the spice aisle once when my daughter-who-loves-to-cook and I were shopping. The tiny little bottle had a price tag of almost $30. It had a rolled up paper inside that told you how to mail it in with your paid receipt to get the actual saffron.