I'm confused, the hint for 'yasuku' said it meant "small in quantity". How is that equivalent to "cheap"? To me it sounds more like it should mean "there aren't many of these coats", but I guess not?
This is Duoingo being finicky; "small in quantity" is the hint for すくない, which you get if you hover over す. If instead you hover over や, you get the hint for やすく, which is "cheap".