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Put the other 70 in a bank for something you might legitimately want later down the road?

Yeah just keep it then when you're walking along and suddenly go "zomg i must have the gizmomaster 5000" you have the money.

It's better to buy something you're craving than just to buy something.

Or you know, when your POS speakers suddenly start buzzing you'll have money put aside for just such an eventuality, whereas I'm suffering the buzz :(
 
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