Found this flyer.
I think this is only for internal use. So mods, if this violates anything, feel free to remove it.

MetroPCS November Promotions

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“4 for $100” Family Unlimited Plan. November marks the return of the most successful promotion in the history of MetroPCS. All “Family Members” receive a graduated discount on the V40 Rate Plan based on the number of lines on the account. Smart Phones and Blackberry not eligible for 4 for $100.

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$30 Promotion (M30). The M30 Promotion includes local and long distance calling, voice mail, caller ID, call waiting, domestic and international SMS and MetroPCS Unlimited Nationwide.
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Additionally M30 customers may add “Bolt‐on” features.
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MetroFLASH phones are also eligible for this promotion. ALL phones with the exception of Smart Phones and Blackberry are eligible for M30.

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$20 Bonus Mail‐in Rebate in ALL Markets. This promotion offers a $20 mail‐in rebate on All phones. Instant rebate phones are excluded but can be combined with other mail‐in‐rebate offers, such as the Samsung Fall into Savings promotion.

I think these are nationwide promotions. Discussed here and here