They’re nice marbles, but there weren’t many big ones in my tin (156× small, 2× large, 2× huge). I see that the small marbles are slightly different sizes depending on their design. This could make marble run races more interesting, but ruin any science experiments you might plan to use them for. There are a handful of distinct colour ways, so none of the marbles are individually 'special’. Reasonable value for money compared to small bags of marbles sold elsewhere, but those bags usually have 1 large marble in, so they work out better if you want a bigger variety of sizes, it just depends what you’re looking for.