The deal on Kids Woot today, 9/21/12, is for a 4-Piece Potty Training Set for $16.99. Shipping is a flat rate fee of $5 for your order.
The set includes:
(1) Soft Potty Seat
(1) Travel Potty Seat
(1) Step Stool
(1) Potty Seat Hook
You can choose from styles of Princess, Cars, Sesame Street and Dora.
If you are looking for a potty training book, especially to pair with the princess set, I recommend Princess Potty Book. The book includes stickers and a paper tiara.