Great name there..
In this case the difference between the groupings of sales is the same number so Bins seem appropriate - Create Bins from a Continuous Measure Have you tried using these?
If that doesn't work then a calculated field may be better - do you have a small sample of the data or even a workbook using Superstore sample data to provide the scenario details?
I also added one example of a count of items by sales price with everything binned in increments of $50.
count of items by price.twbx 1.9 MB
Thanks Patrick for taking the time to answer my question. I will try the creating bins option.