First, earn the exchange rate difference
This kind of business is more conscientious, but the exchange rate difference is not much, unless the amount of store recharge is very large, otherwise there is basically no profit, this is basically a few big sellers will be so, small sellers more is another situation.
Two, black card
At present, most small platforms are used to recharge the black card, compared with the white card is very cheap, because it is almost no cost for the seller, so it will be cheap, but the bitter fruit is the player bear, light soft seal, heavy direct seal.
In fact, many of these very cheap online replacement services are basically sneaky
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The cheaper ones are probably bought by the exchange rate, which is relatively safe
2. Much cheaper is basically a black card, which is to give you a refund after finishing, the probability of being blocked is still quite high, but there are not blocked