Wallet balance.
You must disclose whether the character being sold has a negative balance in its wallet and the amount. As the ISK received for the character sale is transferred directly to the character for sale, that character gets in virtually all cases a positive ISK balance. It’s up to the seller to remove only so much ISK as that the character is still in the plus prior to transfer.
Kill rights
You must disclose if there are kill rights on the character for sale. Kill rights you possess on other characters are to be treated as assets and not included in the character listing.
Jump clones
The seller must disclose whether jump clones are located in 0.0, lowsec or highsec space and may for example not claim the character for sale character is able to fly ship X or Y when that is clearly not the case.
Character location.
The location of the character must be disclosed and whether it is in high security, low security, null sec or wormhole space. You must also state if the character is in space or in a station.