If the pricing is close to retail, a buyer is better off going new, and take advantage of factory financing, especially the zero interest rate.
Can OP offer financing? Likely not.. Is warranty transferable? Even so, at retail used, buyer is better off establishing their own dealer relationship.
Is there a channel or finance lien against this existing machine? I would require owner own the tractor free and clear before any $$ change hands Not willing to advance seller $ to pay off loan, too messy. Existing loan, if one exists, could be attractive if lender would allow a new owner to assume that loan. If OP is expecting a profit in selling the tractor, I have a vacation time share for sale and some bit coins as well.
Unless the OP is willing to take a loss, this sale offers no advantages except perhaps a sales tax savings if applicable.