TBC Exchange will depends on your Membership Plan. You must Deposit first using BTC.
Ex: You choose $20 you will exchange $30 worth of TBC to BTC
You choose $30 you will exchange $45 worth of TBC to BTC
You choose $40 you will exchange $60 worth of TBC to BTC
You choose $50 you will exchange $75 worth of TBC to BTC
Deposit your Membership Plan: BITCOIN ACCEPT ONLY
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