The data, with particular regard to profits, is primarily targeted toward Fulfillment by Amazon (FBA) selling; we base profits in part on a target buying cost of 75 cents and an average 65 cents per item delivery to an Amazon warehouse. It doesn't account for warehouse costs.
Accordingly, what we've developed to date is always evolving and, we hope, improving. To that end, we are often making changes to the software and, so, you can expect some things to look different from time to time.
Please explain the data you call and format.
Starting on the left column of the single item result page, Title and an Image are called, both self-explanatory. Images can take up a lot of room, particularly on a mobile device, but because of non-ISBN search features (featuring up to 8 results), we think it's important to have an image. In this way, if for example users have voiced or texted in a title in hand, they can see if the item image matches up.
Weight and height serve as important reference points for shipping costs, both sending to an Amazon warehouse and if the item is fulfilled by Amazon.
Sales Rank is also an important reference point, but for us it is not always instructive. Sales ranks are dynamic, i.e. they're constantly changing. A seller can make poor decisions if the Sales Rank is either high or low. Like other data points, Sales Rank serves as a guide in context.
What is the "SPIN," current AZ offers and their associated data?
On the right column of the single item result page, the first line is the "Sellernaut Price Index Number," calculated on a matrix of weighted data points. Generally speaking, any SPIN over 40 is excellent; 30-39 is very good; 20-29 is good; under 10-19 can be good but may have question marks; and anything under 10 should be questionable. Notwithstanding all these arbitrary calculations, there are always anomalies; we have seen calculations below 10 that we would buy, while a recent SPIN in the 30s is something we would have a hard time justifying a purchase.
New and Used offer totals.
Competitive Price is, generally speaking, an FBA offer.
If there's a Competitive New offer, it will show and it is not necessarily always Amazon's.
The Lowest Used Offer is called to distinguish from the Competitive Price because it is not always and is often not FBA. If one sells FBM, it is also obviously helpful to see. We like to see FBM prices above $5.99 for the most part. Complementing the Lowest Used Offer's line is the offer's condition and associated Seller Rating. We believe these are important data points when making buying decisions.
The Competitive Price Offer's profit is calculated. Again, this is a general idea of profit for FBA of the item, based on garden-variety costs, weight, and height of the item.
Why do you only show one price call for New and Used offers?
In previous iterations of our software, we provided additional Used Prices, their conditions, and associated Seller Ratings. Two things made us re-consider retrieving more prices: one, space - formatting is limited, particularly on a mobile device; and, two, the benefits of seeing prices below the Lowest Price are, to us, limited.
What do you mean by "buyback?"
For those unfamiliar with buyback or trade-in on Amazon, it was typically (and still is) a way for college students to sell back their books, often to a university bookstore, often at a large discount but at least in a way to recoup or mitigate their costs of education. Today, there are tens of online buyback companies who often buy not only textbooks but other non-fiction and literature for prices that you would not be able to equate selling FBA or FBM.
Accordingly, the first line under Buyback shows if Amazon is buying it for trade-in (Amazon gives store credit, not cash). We do not format any Amazon trade-in price if it's not at least $1.00.
"TB" for textbooks.com is one of our favorite buyback companies because they often pay good prices for classics, not just "textbooks."
We used to provide historical buying of the item but it is currently unreliable.
What do you mean by "sales history?" Is that my sales history? How is this different from Keepa or camelcamelcamel?
This section links to our Amazon sales history. We show Sales Count, Avg Price for that Sales Count, and the last recorded purchase (sometimes the data doesn't update as readily as we like). Knowing Sales Historical Prices is a better measure, we believe, than simply whether items have sold, a la Keepa and camelcamelcamel. Please note that because it's our own sales history, though neither big nor small, items may have no history at all or a weak sample size.
If you want to hook up to your own Sales History using Sellernaut, please let us know.
Can I make non-ISBN searches?
Yes. 10-digit and 13-digit ISBN searches automatically go to the single item page, but a non-ISBN search (title, author, product) will call up to eight results on the multi-item page with according images, if provided by Amazon. UPC searches (12 digits) now often work with the software, but if they don't it's most likely because they are not currently in Amazon's library. The below partial screenshot shows eight results for an item. We changed the search box to "wait" for the user with the search item; selecting "More Data" is only advised when the user is certain the selected item is the one desired. Otherwise, on clicking "More Data," the additional data is displayed and the search box refreshes for the next entry.
Mousing over items will highlight them. Click on "More Data" by item and it will be submitted in the Search Box.
Where do you get your data?
Almost all data is called via Amazon's MWS API.
Seller credentials are ours. We don't currently have access to Amazon's bulk data.