Where can I watch/buy the original series of Doctor Who?

[Littledude]

DOes anyone know where I can watch or buy the original series of Doctor Who?
The episodes made from 1963-1996.
Netflix only has the special episodes, like "The Three Doctors" and such, I want to watch the entire show from the start.

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[Katamari007]

Amazon?

[VinnyTheGuy]

The complete box set is like 100 bucks.