Well, whaddayaknow …!
It does not happen very often 
, but I’ll admit it, I was wrong. (It often happens I’m wrong, just that I rarely admit to it.)
It’s about the storage fees thingy. I have, for a very long time, maintained that Amazon do not provide us storage fees by ASIN. It turns out they do.
There’s a report we already download for other purposes which contains the storage fees by ASIN. A couple of subscribers kept telling me of that report, and I always dismissed it.
I never denied that the report contained ASINs and that it contained storage fees. But I always said these were not reconcilable with the financial transactions we receive from Amazon, which form the basis of all the financials in SellerLegend. So, I was adamant we would not use this.
Now, thanks to Michael’s tenacity, he forced me (yeah, against my will), to have a second look, and lo and behold, there was light!
The storage fees we receive in Amazon’s financial transactions do not carry an ASIN. That is because they are organized not by ASIN, but by fulfilment centre. And also, the fees are delayed by one month. So September fees are passed in October, for example.
Once you take these two facts into account, (and you disregard the fact the report says the reported storage fees are just an ‘estimate’), the report with the ASINs matches the financial transactions by FC exactly.
What does that mean, you say?
Well, it DOES NOT mean that your profits or fees in SellerLegend will be any different. We always considered the storage fees in settlements and, recently, in the P&L. But we counted the storage fees at the total aggregate level.
But it DOES mean that we will soon be able to assign monthly storage fees to ASINs and therefore save you a load of time calculating this manually. It also means you will be able to have a more precise product profitability.
It also means that you’ll be able to gauge how much an ASIN costs to store in FBA and compare the cost against 3rd party storage solutions.
Now, how we squeeze this in the development cycle is another story. I’ll keep you posted.