I did not receive a discount when I purchased my binocular although Maven now offers a demo program. As I understand it, under this program, you receive a demo with 2 weeks to try it. If you like the demo sent, you keep it and the cost is 10% off new ($900 for the 9 x 45), if you want a new one, you return the demo and pay full price. If you don't like the binocular, you return it at no cost. Sounds like a good deal to me. As to the focus, you are correct: the focus is changed immediately as the focus knob is moved.