I dont think there is a place to sell it all unless you want to go like 50% of cost. Parting it out is the best way to make your money back.

Put it on ebay, offer free shipping, price it slightly lower than what anyone else has the same model listed for.

My recent experience with a bunch of old stuff pulled from a project was that the base stations sold fast. All gone within 2 days. Buyers would message asking if i had more. The remotes moved slow. One is still listed with no offers.