Consider surrendering your horse to a Rescue Organization. You may not make any money, but your heart may feel better:) Check out Rescues near you:
If you need help with the surrender fee, you can request a fundraising campaign sponsored by HorseRescue Hub:
You can also list your horse for sale right here on HorseRescue Hub! It is recommended to have the buyer sign a contract with a buy-back, or right of first refusal clause.