Looks like Netflix has the rights to Mythbusters Seasons 1 through 10
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movies.netflix.com/WiMov ··· 70136128Looks like seasons 11-14 are on amazon (Pay only, not available free)
If discovery was showing them then the link thetick listed is where they would be... but discovery doesn't do that very often as they are trying to drive traffic to their cable channel to increase ad revenue.
Once again only the black market has what you seek, but that would be worse that killing someone so don't even think about it, ok?