by Lawrence » Oct 15th, '07, 19:26
It's generally because people like to mix their diablos, strings, sticks, axel kits... all that jazz, so you get many "professional" quality sets.
It'd be like someone selling the "right" deck of cards and coins in a set together. ok, not quite like that, but you get what i mean... or possibly not.
Guitars would've been a better comparison
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