OK, some updates are needed. Tower is www.towerhobbies.com and not greatplanes.com

In general, you do not buy product directly from
(Great Planes)… www.greatplanes.com/airplanes/arf-glow.html
Top Flite… www.top-flite.com/airplanes/gold-arfs.html
You can buy replacement parts through them but the planes and accessories are sold at the retail level by Tower, other online dealers, and local hobby shops.