Two TVs and a collection of DVDs? (3,3)

I believe the answer is:

box set

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'a collection of dvds?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'two tvs' is the wordplay.
'two tvs' can mean two replacements for 'tv'.
'tv' becomes 'box'.
'tv' becomes 'set' (television set).
'box'+'set'='BOX-SET'

'and' is the link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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