According to a leak from Radio Shack, the upcoming HTC EVO 3D on Sprint will cost $199 on a two year agreement and $499 off contract. The HTC EVO 3D is the latest addition to the EVO lineup on Sprint and its claim to fame is that you don’t need 3D glasses to enjoy 3D content. In fact, The Green Hornet in 3D will even be pre-loaded onto the device, so you can enjoy a 3D move practically right out of the box. If you own a HTC EVO 4G or a HTC EVO Shift 4G, then you may trade in your current device and receive $100 credit towards a purchase of the HTC EVO 3D. While this may not be the official pricing from Sprint, Radio Shack has a good track record of announcing prices for devices that have yet to receive an official price tag.