For new Audible members only, Amazon offers Prime members an Audible 3-Month Trial Membership
. That's a savings of $45 and the lowest price we could find, although we saw it briefly with a $10 Amazon gift card yesterday. This trial gives you a free audiobook download for each month.
Not a Prime member? Groupon offers new members an Audible 2-Month Trial Membership
. (That's a $30 savings.)
Note: Be sure to cancel your membership before the trial ends to avoid a recurring $14.95 monthly charge.