What my beds are worth??

Hello, does anyone know where I can look to see what my beds are worth? I have a 2009 Starpower 548 (12min), a 2009 Solaris 542 (12 min), a 2009 Solaris 442 (15 min), a Sunstar Zx32 series (20 min)and a 2009 Sundome (10 min)??
Thank you!!