Instead of using a quick calculation, I suggest that you create a specific sales rank calculation. This will give you more options
for the computing of the rank.
If you check on the validateData sheet, ... right-click on the sales rank pill, select Edit table calculation, click Specific Dimensions and select Unique Identifier ,Model and Price band, and set At the level Unique Identifier. This gives you the correct computation with the dimensions needed in the View.
On the View sheet, you just have to add Model on the detail shelf, change your filter for the new sales rank calculation, and set the same computing.
Finally, you can add a copy of Model on the Label.
Works like a charm. Thank you so much, this is going to save me a ton of frustration and work arounds.