A drug is available in 8 mg and 16 mg sizes, and the 16 is scored for cutting in half. The price for 90 day supply for the 8mg is $154.84 and for the 16mg is $154.97, or only $.13 more.
If you need to take 8mg daily, and order the 16mg and cut them in half, you effectively cut your costs in half.
Is this "insurance fraud", as a pharmacist has told me, assuming the prescription says "16 mg, take 1/2 pill daily".