i dont have any referals also u cant sell referal ghs as it dosnt get added on to your current owned ghs, i purchased these ghs with btc that i mined from slushs pool and built up my ghs over time, the ebay auction i have bidded on ends in 20mins and is currently at £62 so i may sell the 5.5ghs for £65
in other words sell for market value, because that is all they are really worth now anyway. best of luck with the sale, u may find someone wanting to get into btc with fiat without having to pay the fees involved to sell to