The 155 is truly an amazing scope and $10,000 is a fair price for one. Something's not exactly normal here. I'm not saying fraudulent, but there's a reason it's being offered so cheap. I've owned the 155 and 160 and sold the 160 because I liked the portability of the 155. The 160 is a great scope obviously, but the 155 has been producing amazing images for me.