I bought the Snow White one a few years ago when it came out. I'm not usually name brand person, although I do love Kate Spade bags. Name brand or not, it's usually about the price tag for me. As OP stated, I too have a hard time spending a lot $$ on things I don't really need (although it is fun sometimes

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That being said, I fell in love with that D&B Snow White bag and love it just as much now. It just looks like a piece of Disney art to me. I use it very often.
Honest opinion of D&B leather bags....very well made, wear very well also. But I find them heavy. Even empty, it's a heavy bag, that's the trade off for the leather and for the hardware on a very well made bag I suppose.
I bought it on sale, with a DVC discount on top of it, so it wasn't outrageously expensive, as some name brand bags can be. I haven't purchased a DVC themed bag, in any brand at all, yet anyway. I haven't found one I really like yet.
If you really like the one you're looking into, you will get a lot of use out of it because it will definitely last. Good luck with your decision and have fun shopping!
Dee