Netflix has just announced it's own Netflix Card, offering a pay-as-you-go-a-like service for any of its three tier subscriptions.
The value on the card can be used towards any of the different subscription types - from SD all the way through to it's Ultra HD 4K streams - but isn't just aimed at the standard monthly rates.
The value on the card is applied to your account for as long as the chosen £15, £25 or £50 would last on that particular subscription model, on a per day and not just on a per month basis.
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