The retired books are listed in alphabetic order in the following format:
Name of book (old rarity before being retired) -> Price as of 5:00 PM NST on March 27, 2012 -> Price as of 12:00 PM NST on March 28, 2012 -> Price as of 5:00 PM NST
1. A Tale of Two Lupes (r40) -> 2000 NP -> 10000 NP -> 10000 NP
2. Algebra (r40) -> 3000 NP -> 45000 NP -> 35000 NP
3. All About Light Faeries (r40) -> 2500 NP -> 8000 NP -> 9900 NP
4. All You Need to Know About Your JubJub (r39) -> 1200 NP -> 6000 NP -> 8800 NP
5. Big Foot the JubJub (r35) -> 2000 NP -> 4000 NP -> 8400 NP
6. Blumaroo Guide To Dancing (r32) -> 2000 NP -> 10000 NP -> 10000 NP
7. Confident Kyrii (r44) -> 1500 NP -> 5500 NP -> 6800 NP
8. Cybunny Financing (r40) -> 1500 NP -> 3300 NP -> 5500 NP
9. Dance Away (r30) -> 2500 NP -> 19000 NP -> 20000 NP
10. Drawing Kiko (r40) -> 1000 NP -> 5500 NP -> 9000 NP
11. Feed Koi (r32) -> 1500 NP -> 5000 NP -> 5200 NP
12. Feeding Lupes (r30) -> 2200 NP -> 5000 NP -> 5500 NP
13. Healing Koi (r35) -> 2400 NP -> 5000 NP -> 9000 NP
14. Inside the Mind of a Lupe (r35) -> 500 NP -> 1000 NP -> 1000 NP (DO NOT BUY - given out by Altador daily)
15. JubJub Manual (r40) -> 1300 NP -> 5000 NP -> 6500 NP
16. JubJub Roll! (r37) -> 2300 NP -> 5000 NP -> 6000 NP
17. JubJubs Day (r42) -> 1500 NP -> 6000 NP -> 9800 NP
18. Kaus Guide to Better Grazing (r40) -> 1500 NP -> 4900 NP -> 9800 NP
19. Keeping Peophin (r34) -> 1500 NP -> 5000 NP -> 8000 NP
20. Kiko - Fu (r40) -> 50000 NP -> 53000 NP -> 45000 NP
21. Kiko Care (r45) -> 1200 NP -> 5000 NP -> 9500 NP
22. Koi Owners Manual (r38) -> 1200 NP -> 5000 NP -> 8000 NP
23. Neopian Encyclopedia A - E (r25) -> 10000 NP -> 44000 NP -> 44000 NP
24. Neopian Encyclopedia F - J (r40) -> 2000 NP -> 5000 NP -> 9900 NP
25. Neopian Encyclopedia K - O (r35) -> 2100 NP -> 5400 NP -> 9800 NP
26. Neopian Encyclopedia P - T (r35) -> 2200 NP -> 6500 NP -> 9900 NP
27. Neopian Encyclopedia U - Z (r30) -> 2700 NP -> 5500 NP -> 7800 NP
28. Oopsy Daisy (r40) -> 2000 NP -> 19000 NP -> 44000 NP
29. Purple Power (r35) -> 2000 NP -> 5600 NP -> 7400 NP
30. Radio Active Pteri Part 1 (r40) -> 2000 NP -> 5500 NP -> 20000 NP
31. Raising Young Kau (r35) -> 1600 NP -> 5000 NP -> 8500 NP
32. Scaredy Acara (r30) -> 2200 NP -> 4000 NP -> 5500 NP
33. The Angry Chomby (r32) -> 1600 NP -> 6600 NP -> 6900 NP
34. The Art Of Cybunnies (r32) -> 1200 NP -> 3500 NP -> 6500 NP
35. The Great Chomby (r40) -> 1800 NP -> 8000 NP -> 9800 NP
36. The Happy Blumaroo (r40) -> 1000 NP -> 10000 NP -> 19000 NP
37. Train Koi (r40) -> 1500 NP -> 5000 NP -> 7000 NP
38. When Your Meercas Hurt (r40) -> 1100 NP -> 4000 NP -> 5900 NP
As you can see, all the retired books were between r25-r45 before being retired. However, retired books are pretty good investments, so I would highly recommend investing in some. I have listed the shop wizard prices as of 5:00 PM NST to help you see changes in price and to determine if the books are worth investing in. Good luck to everyone and happy investing
Updated again with the prices at 8:00 PM NST on March 28, 2012 (24 hours since original post).
Edited by rhexis07, 28 March 2012 - 04:30 PM.