A "ranked ready" account has already played the ten normal games required to unlock the ranked queue, which saves you roughly two hours. What it also has is whatever MMR those games produced.
If a human played ten thoughtful draft games, that is fine and may even be favourable. If a bot lost ten games in a row, you start beneath where you belong and climb out of a hole you did not dig. This is why ranked-ready accounts should be bought on their match history, not just on the label — and why some sellers advertise a specific record, like 11 wins and 1 loss, as a selling point rather than a detail.