The SSLs I'm purchasing are paid off. Why are there financing terms on the transfer contract?

Transfer contracts must reflect the original contract terms under which the SSLs were purchased, regardless of whether the SSLs are paid off. If the SSLs are paid off, you will not be assuming any balance for the SSLs. Page 3 of the transfer contract shows what the current owner of the SSLs has paid into the seats so far and that amount will be rolled over to your SSL account to be applied towards the seats.