I have an assortment of audiobooks in excellent condition.  These were purchased new for school this year, and listened to once.  All prices include shipping cost.

From Naxos Junior Classics:
Treasure Island by R.L. Stevenson - 2 CDs: $10.00
Tales from the Arabian Nights read by Toby Stephens - 2 CDs: $10.00
The Railway Children by E. Nesbit - 2 CDs: $10.00
The Enchanted Castle by E. Nesbit - 2 CDs: $10.00
The Sword in the Stone by T.H. White - 3 CDs: $12.00

Naxos Young Adult Classics:
The Hound of the Baskervilles by Sir A.C. Doyle 3 CDs (includes bonus CD-ROM with full text and study guide):$15.00

I also have:
The Phantom Tollbooth by David Pierce - 4CDs: $12.00
The Hoboken Chicken Emergency by Daniel Pinkwater - 1 CD: $7.00

And on cassete, I have:
Tanglewood Tales by Nathaniel Hawthorne - 5 cassettes: $15.00
Tuck Everlasting by Natalie Babbitt - 2 cassettes: $7.00
The Cricket in Times Square -2 cassettes: $5.00 (this one was purchased used, but is in excellent condition).
The Story of the Nutcracker by E.T.A. Hoffman - 1 cassette: $4.00

I prefer non-credit card Paypal, but will accept other methods of payment.