600USD beforehand for just one EX4 decompilation? Seems like scam for me. If would not perform, they will not give you a reimbursement. This application isn't a decompiler, It is really just let you know to pay for and send the EX4 by means of e-mail. Waste of money. Furthermore, https://ex4-to-mq4-decompiler47899.qodsblog.com/30667248/the-best-side-of-ex4-to-mq4-converter