Agree with Iddee. Find out what the going price is for a 'one box hive' that is full of bees, capped brood, larvae, eggs, And the queen. If you have a bee association in your area, go there and tell them you have bees for sale.
I have found that in our area, upper northern California, we can't sell bees, on facebook, Craigslist, Ebay, or the local online marketplaces, because they are considered livestock.
If you hive is two boxes high, double the price.
Springtime and early summer are the best time to unload extra colonies. You might want to consider over wintering your hives and then you can get a premium price for your extra hives. Last year I pocketed $1,400 for my nucs.