The findings were similar, although the number of controls per case was small.
The cost to store lots of 56 cases or more will be 25 cents a month per case.
Most defense lawyers are appointed by the court and paid $15 per case.
That cost £285,000 of public money: £47,500 per assisted case.
Last year the industry spent $150 million on advertising, or an average of $2.16 per case.
On average he managed to make one dollar per case for his work.
The bills usually range from $200 to $400 and cost about $20 per case to process, he said.
The additional cost of using the technique is about $20 per case.
The print run was 3000 cases with 20 sets per case.
Some merchants say a $2 tax increase per case could mean $10 more in the store.