This may be a scam site so do your diligence, looks like they bill through Amazon though. If I had to purchase a new gimbal through B&H or whoever for $150 I wouldn't be too upset a DJI Zemuse gimbal without camera runs $200.
http://drones-quadcopters-and-more.com/product/3dr-solo-gimbal/
Make sure you use a credit card or PayPal when ordering from the sites. Amazon might be higher in price but the warranty is real good.