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To withdraw the balance you have to deposit to $10 - $20 and verify the account.
I'm selling it for $300 of the amount.
I will send first to trusted member.
I would not discuss the offer by itself or the trust of the seller but a service like this is a scam.
No legit service that would give an amount ready to withdraw would ever request a "bitcoin deposit" as "verification". What you need to verify?
Next is a deposit for the fees? Or maybe some missing signature?
No way. Just scam. Avoid to waste your time OP and in some sense also our time since we care that other people will not get scammed with bitcoin.