I did not read the terms and conditions in details, but read the part that are in bold words to know that buying and selling of bet365 account is against bet365 terms of service.
4. Suspension and Closure
4.1 If you want to close your account, please Contact Us. Any negative balance on your account will fall immediately due and payable to bet365, and your account will not be closed until the relevant amount owed to bet365 is paid in full.
4.2 bet365 reserves the right to close or suspend your account at any time and for any reason. Without limiting the preceding sentence, bet365 shall be entitled to close or suspend your account if:
(a) you become bankrupt;
(b) bet365 considers that you have used the Website in a fraudulent manner or for illegal and/or unlawful or improper purposes;
(c) bet365 considers that you have used the Website in an unfair manner, have deliberately cheated or taken unfair advantage of bet365 or any of its customers or if your account is being used for the benefit of a third party;
(d) bet365 considers that you have opened or are using any additional accounts to conceal your activity or to avoid measures put in place on other active or inactive accounts;
(e) bet365 considers that you have deliberately provided incomplete or inaccurate information when registering with the site or during of our verification processes;
(f) bet365 is requested to do so by the police, any governmental or other regulatory authority, court or other authority of competent jurisdiction, law or applicable regulation;
(g) bet365 considers that any of the events referred to in (a) to (f) above may have occurred or are likely to occur; or
(h) your account is deemed to be dormant and its balance is, or reaches zero in accordance with paragraph B.5.1 below.
3.4 Internet gambling may be illegal in the jurisdiction in which you are located. If so, you are not authorised to use your payment card to complete the transaction. However, any bets/wagers accepted from such jurisdictions will stand - win or lose.
If you buy bet365 account, that account have wrong details and KYCs that is not yours. If your account is known that it was bought, expect ban or account closure.
People that are from restricted countries are the ones buying an account also.