saved search to show transaction with quantity greather than x from a manufacturer

Hi,

I am looing to create a saved search that shows me the following on sales orders


Items from the same manufacturer (custom dropdown field) that total to mare than 2 cases (transactions list by each, but item record custom field that shows how many items per case), and also at the base price level


Example
Item abc1 quantity 15  price level 'base price'
Item abc2 quantity 12 price level 'base price'

quantity per case for each is 12, thererore 2.x cases from that manufacturer all at base price.

I want to see this in the search results but nothing else that is either less than 2 cases from the same manufacturer or price other than 'base price'.