Custom Bins based on Calculated Measure at Fixed Aggregation

Hi all,

I need to create custom bins which will display the count of products segmented by the number of times they turnover each year.

ie. 500 products turnover 2 times, 1000 products turnover 3 times, 200 products turnover 4 times.

The number of times a product turns over each year is calculated as follows.

Turns = (SUM([Revenue]) - SUM([Gross Margin]))/SUM([Inventory Amount])

If I create a table with the [Product] field included I will see the number of turns for each product.

So now I need to incorporate the [Product] field to set the level of aggregation in an IF statement (or similar) so I can return a dimension and then do a count distinct of products against that dimension - here's a mock up in excel.

I've tried a range of options offered in other threads but seem to get stuck as I need to use an aggregated measure as the basis of my bins.

Any suggestions?