Seems to be a commonplace scam, I just spoke to someone the other day using the same format of conversation for a transaction as you posted. The reason I knew it wasn't legit from the start is why would someone ask details about the account that are plainly seen in the original post. The guy kept asking me what lvl?, how many credits? empire or republic?, instead of questions someone actually interested in buying the account would like valor level?, gear level?, credits throughout the account?, crafting levels?, etc.
Sorry about your account
