We are having a problem with getting the correct pricing on products when we set them up to be sold in different multi-packs. We believe the issue is when we set up the unit of measure on items.

Example:  We buy a product with 88 units per case and want to sell it both by the case and in increments of 6 (6 being a unit).   The price that we charge (with mark-up) does not calculate accurately when sell the smaller unit of 6. 

Also, is there a way to have the unit of measure to be 1 or less?