For the most part, I can no longer sell Nancy Drew books with dust jackets. People do not seem to want them. One could conclude that the people who want the dust jackets are not shopping on Bonanzle, but I lowered my prices when I relisted some on eBay. Those books did not sell, and some of them were below cost.
The books and dust jackets were not in perfect shape, but several years ago, I could have priced those same books at $15 to $20 and sold them easily. I had tweed copies of #1, 12, 14, 20, 21, and 29 with dust jackets and priced each at $6.99 each. None of them sold. A few years ago, people buying to resell would have purchased them for around $10 each and then marked the prices up. Times have changed.
I do not want to reset the listings for Bonanzle, so I may place those particular books in one lot and see if I can get a taker. I also wonder whether I should place many of my dust-jacketed books in lots to move them out, since I now have way too many. I hate doing that, since I do not feel that the books are worthless. Some people are still buying the dust-jacketed books at higher prices, so I do not wish to give away what I have. I just wish I could sell at least some of the dust-jacketed books to cut down on my extras.
Nancy Drew in the original text picture cover editions sell for around $5-$10 each unless the picture cover is a special or first printing. In those cases, the picture covers can sell for $15 and higher, although I have noticed that many people seem to prefer the cheaper copies rather than the first PCs.
I used to think that the Dana Girls beige spine picture covers have approximately the same value, with the exception of the high-numbered ones. I have concluded based on my sales on Bonanzle that the Dana Girls beige spine picture covers tend to be worth more than the original text Nancy Drew picture covers.
It is worth viewing the completed listings for Dana Girls books on Bonanzle, sorted by highest price first. While #27-30 are the hardest to find volumes, they are the hardest to sell when the prices are marked accordingly. I suspect that many buyers are content with the much cheaper white spine counterparts of those volumes, which keeps the demand down somewhat.
I have noticed that the prices of #1-26 in the beige spine picture covers are often priced low by many sellers. I began by pricing them low and sold them extremely fast. As I found more, I gradually marked the prices up since I concluded that the books had to be worth more than I thought. The books continued to sell fast even as my prices gradually increased.
The following comments do not apply to books with heavy wear or books that have noticeable flaws like a tape scar on the cover or a split binding. Books with those flaws are always worth less.
I have this lingering idea that the low-numbered volumes should be worth a little less than the mid-range volumes, but I may be wrong. I first priced these books at around $5, but I have now raised my prices to around $10. If the book meets the points for the first PC printing (#23 on back cover, ND to #39 and DG to #23 on inside), then I price it slightly higher, unless the condition is rough.
#7 to maybe around #11 are probably worth around $15 each. #12 to around #21 are definitely worth at least $20 each. Some of #12 to #21 may be worth more than $20 each. Some volumes are much harder to find than others, and #12 seems to be one of them. #23 to #27 are worth $20-$25 each. #28 and #29 are worth $40 to $70, roughly. #30 is worth around $100, and possibly a little more.
Collectors have known for years that the higher-numbered volumes are scarcer, but it is apparent that many people have trouble finding the middle volumes. The values mentioned here are based on what I have successfully sold so far, and some of the middle volumes may be worth more than what I have quoted.
I have observed that eBay auctions no longer yield actual values for the majority of books sold. Often, the Dana Girls picture cover editions sell on eBay for under $10 in the auctions, and that is why many people price them so low in their listings. The sellers who successfully get the higher prices have used the fixed-price listings in which buyers have more time to notice the books.
The completed listings search on eBay is mostly useless now, and I encourage sellers of series books to utilize other methods in order to fairly price their books. For series books, Bonanzle's completed items search will help greatly since it has many months of completed listings.
Sellers always need to watch pricing trends. Some books that were once high in demand are not currently of interest, and many once-coveted books are no longer worth very much at all. Sellers must be willing to adjust their prices up and down based on the current trends, even when the trends are down.