From drugs.com....the GL price is not that cheap.
The cost for Lovaza oral capsule ethyl esters 1000 mg is around $322 for a supply of 120 capsules, depending on the pharmacy you visit. Prices are for cash paying customers only and are not valid with insurance plans. A generic version of Lovaza is available, see omega-3 polyunsaturated fatty acids prices.
This from the ICER report, I don’t see a real cost advantage for GL.
Icosapent ethyl's wholesale acquisition cost of $303.65 per month and estimated net price of $1,625 per year after discounts yielded a cost of $18,000 per QALY gained.