Hi there, @GeorgeIoak.

Thank you for providing extra details about your concern. I can help you enter and set up the items in QuickBooks Desktop.

When entering the item, you must select the correct unit of measurement and groupings. I'll show you how:

1. Click Lists.
2. Choose Item List.
3. Right-click on your mouse, click New.
4. Choose Inventory Part for the item type.
5. Go to the Unit of Measure section and click Add New.
6. Select Count and Next.
7. Choose Each and Next.
8. Select Box and Case, then click Next.
9. Enter 50 each = 1 box and click OK.
10. Enter 2500 each =1 case.
11. Select the appropriate unit of measure.
12. Click Finish.
13. Select the income account.
14. Click OK to save the item.

You can create other items with different set of measurement, GeorgeIoak. For in-depth information, please refer to this article: Use single and multiple units of measure for items.

I'm still here to help you further if you have more questions about inventory. Just leave a comment or mention my name. Wishing you all the best!