Account transfers are expressly forbidden, as per article 3 of the EULA. Accounts found to have
changed hands may be transferred to their original owners, or banned
permanently, at the discretion of the GMs. This includes accounts bought and
sold on online trading services such as eBay.
Please note that sharing your account details is also a violation of the
aforementioned EULA.
It is however possible to move individual charcters between accounts via the
character transfer option in the account management pages.
If you are thinking about buying or auctioning a character for ISK, check our
forums
for more information.