Regarding the actual out-of-pocket cost, this varies from situation to situation.

至于实际出实付成本，这情况各不相同的情况。

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I have to use my pocket money to pay for the extra cost.

我不得不动用零花钱来支付这笔额外的花销。

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Monthly living cost in this big city can burn a hole in your pocket.

这个城市每月生活费用支出就足以让你的口袋见底。

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Monthly living cost in this big city can burn a hole in your pocket.

这个城市每月生活费用支出就足以让你的口袋见底。

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