The Nokia Lumia 520 has been one of the most important phones for Microsoft and Nokia. One estimate by AdDuplex from last month put the Lumia 520 at 33% share of all Windows Phone 8 devices. Not bad when you consider how that phone has only been available for a few months.

Coming in at $99 on AT&T as a pre-paid GoPhone is one heck of a deal. It’s even more of a deal when it’s just $69.99 on Amazon and yes, it’s Prime (that means free shipping for those with Prime accounts). We want to be clear: that’s $69.99 for a no-strings attached Lumia 520. You can throw in any AT&T SIM and get service without a contract, just pay as you go. Already have an AT&T account? You can throw in your existing SIM and start using the Lumia 520 without extending your contract.

The Lumia 520 sports a 1 GHz dual-core CPU, 512 MB of RAM and a modest 4-inch 800x480 display. It’s by no means a powerhouse, especially with just a 5 MP shooter, but it’s more than adequate as a daily driver, spare phone, a phone for your parents or just because you have $70 and you want to try it out.

If the Lumia 520 for $69  tickles your fancy (you can read our review or see our AT&T unboxing), then head to now to have it delivered. You can also grab it for even cheaper ($59) from Tiger Direct starting Friday.

Thanks, Ryan T., for the tip

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