Selling advice - 2014 bad HV battery

Well, the time has finally come. My 2014 Volt high voltage battery needs replacing, and the cost to do so is hard to justify. Engine runs fine (recently had a tune-up) but without HV battery it goes into reduced propulsion and is essentially undrivable.

Any advice on how to best sell it and/or approximate value? Stealership offered a couple hundred for scrap, which is ridiculous.

I'm in the Atlanta, GA area.