I am have been interested in Horus reticles as well. The consensus is to stay away from Horus branded scopes. Of the major manufacturers: Leupold, US Ooptics, S&B, and Nightforce offer Horus reticles in their scopes. There might be more, I am not sure.
For your price range, you should probably go with a Leupold or a Nightforce. I think you have to give the manufacturers a call to check on pricing and availability.