I bought one awhile back and the chips are in as good as, if not better than, the primary set I built later on.
You can still find mint fracs. Good condition $1s are tougher to find. The one that came in my sample is by far better than any of the 200 I acquired later. I have never seen anything besides "well loved" $5s. $25 and $100 can still be had in good condition. And if you want to get the $500 too, it'll cost you. Putting the best quality available sample set together piece by piece will cost way more than the $12
@Apache is selling them for. Here are pics of my sample set, just to give you an idea of the condition.
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Good luck with your search.