I would say say that this has little meaning and therefore only has value for the natural type-in traffic it gets as a typo for liberia.com (which currently doesn't have a developed site and will therefore currently have restricted traffic).
Multiply your current annual PPC income by 10 to 20 and I think you would have a rough guide as to its possible resale value to an enduser.
Multiply current annual income by 4 to 10 to get a potential reseller value.