Burger King fans, what good life hacks do you know to eat there as cheaply as possible (except for Sberbank, thank you)?

 
Burger King fans, what good life hacks do you know to eat there as cheaply as possible (except for Sberbank, thank you)? - My, Food, Freebie to Burger King, Burger, Freebie, Life hack, Freeloaders

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