I cannot locate a trailer price guide like NADA anywhere on the Internet

I am looking for a good price for a 1996 Featherlite Model 9444 trailer.

It is 7 X 17 ft Gooseneck type, 3 horse slant load with rear tack area and front dressing room with bed area.

It in excellent condition. Has new tires and had been taken good care of.

I have a 16 foot 3 horse slant with front tack area but am thinking of upgrading.

Any ideas what the Featherlite is worth?

Thanks