Can I use a pricing calculator but display the grid from a price break pricing engine so the user can see the quantity breaks?

This isn't possible with a pricing calculator.  Some alternative options include:
1) Use a unit of measure pricing engine.  You could set your units as the set quantities.  A grid would appear that looks like this: 
This would also limit users from ordering the product in quantities other than the set quantities.

2) Create your own grid and put it in the long description of the product.  The grid would still appear on the product page.