I see a negative on my wallet balance for the deal I accepted recently, does this mean I have already paid?

The wallet is linked to all transactions that occur in the xChange platform, and immediately reflects credits and charges originated from these transactions. Accepting a container purchase represents a charge to your account, which occurs upon acceptance of the deal. If, even after this charge, your balance remains positive, you can consider the invoice for this trading deal as paid. If in doubt, it is best to always confirm in the deal request chat or if you have any further queries to email payments@container-xchange.com.