Can I enter cost information for items that have already sold?

You sure can.

If you go to the Inventory -> Sold view, you will see a list of items that have sold, sorted by date. For any items where Seller Ledger couldn't automatically match cost information, you will see a button called "Add costs."

Click on this button to bring up options for adding the cost information:

You'll see there are 3 options for adding cost information:

Option 1: prior inventory purchase with no details

If you have previously categorizes one or more purchase transactions as "Inventory", and you haven't yet allocated those costs to individual items, you can do that now.  In the list that pops up, you will see all inventory purchases that do not yet have all of the item details under them.

If you'd like to narrow the list, just start typing the name of the vendor...

Choose the transaction in which you purchased the item that just sold, and you will be prompted to enter the cost of that item.

Option 2: existing inventory

If you have already entered cost information for that item into Seller Ledger as inventory, but we were unable to match it automatically (for example, if you didn't use the same unique SKU in Seller Ledger as you did in your listing,) you can simply choose the item.

You can also search by product name or SKU to help narrow down the choices:

Option 3: Add the cost right here, right now

For those of you who don't require the precision of tying back every item to a specific purchase transaction, you can simply add the cost and click "Save".

If you want to add a specific vendor and purchase date, you may, but it's not necessary.

Note: option #3 will create a manual inventory purchase behind the scenes and treat it like you contributed this item as part of an "owner's contribution." This option works well if you are manually tracking expenses within Seller Ledger, rather than linking bank or credit card accounts.