If you cancel your MQL5 Market purchase within 7 days, without having installed it in any MT4/5 terminal, yes you will get your refund.
Will it return to my bank? Or to MQL5 balance?
If you deposited to your MQL5 account first and then you proceed with your purchase, it will return to your MQL5 account balance.
If you paid directly with your credit card, it may be returned to your card, but I am not sure.
You can ask the Service Desk to be sure, that is a financial issue after all.
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