It all depends upon your agreement with the distributor. I've seen agreements that require you to buy your own discs from the distributor at their standard wholesale price if you intend to sell them yourself.
The value in agreeing to a distribution contract like that is if the distributor is putting significant effort into promoting and marketing your disk. Obviously if you're the one generating the sales, you don't need a distributor who takes a large share without investing money and effort on your behalf.
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Marty
my new home If you look at the glass and see it as half full, drink up!