I love that green one with the flower! Gorgeous!
Personally, I probably wouldn't buy them just because I'm generally not too gentle on my brushes (I keep them in a bucket with other brushes, throw them back in said bucket after I'm done brushing, constantly dropping them, etc) and I'd hate to buy something that pretty only to have it look thrashed in a couple months.
I do, however, know people more careful than I that would adore something like that (provided of course, that the paint is sealed to protect from the little things).
And something like this would make a great small gift for any horse person. Who says no to brushes? Um, NO ONE.