This knife is basiaclly a ripoff of the Serge Panchenko Peanut Knife. So if you like the style drop $300 on that one instead. But if you think a $25ish small detent flipper is something you NEED, then I guess buy it at Gear Best. I have recently made it a point to not review direct ripoffs, but sometimes one slips past me. Oops.
Ripoff can be found at Gear Best for ($16 with coupon: FURAGBjx): https://www.gearbest.com/pocket-knives-and-folding-knives/pp_629343.html?lkid=12298522
Buy the real one here: http://sergeknives.com/bean.html