Amazon offers Prime members an Audible 30-Day Trial Membership bundled with two Audiobook Credits and a $15 Prime Now Credit (on an order of $35 or more) for free. (This offer is valid exclusively for new Audible members who reside in regions where Prime Now service is available; eligible members will see a banner for this offer when they click on the above link and sign in to their Prime account.) That's a savings of $30, even without factoring in the two audiobook credits. (You'll be able to choose any audiobook to redeem your credit, regardless of price, which is good because there are some ridiculously expensive audiobooks out there.) It's also tied with the best discount we've seen on a single Prime Now order. Deal ends February 15.

Note: Even if you don't live in a city with Prime Now service, you can still get the trial and two audiobook credits for free. Be sure to cancel your membership before the trial ends to avoid a recurring $14.95 monthly charge.