Erm... I didn't buy this for the stash, I bought it because I couldn't resist the bargain, and with the bitter chocolate that was 4.5 metres... I think I bought it with a skirt and jacket in mind, but it got stashed when something that paid came up! The chocolate and black... Well, six metres... Dunno really!
I never usually set out to buy specifically for stashing: it just happens! I sometimes buy as much as 10m of a fabric for things like toiles. Other than that, as much as I can afford/get away with/need for a project! ;)