I’m an audiobook evangelist. I rarely go more than a few days without listening to one, and I’ll blast through two or three in a single road trip. But audiobooks are expensive and their prices don’t seem to be moving downwards like their printed counterparts. So, if you want to score a few audiobooks for dirt cheap, now’s the time to check out this promotional deal from Audible. If you’ve never subscribed to Audible before, you can get three months of service plus three audiobook credits for just under $3 total. This is a fantastic deal since a single bestselling audiobook can go for $20 to $3…